Exercise 5 C
Q1 | Ex-5C | Class 8 | SChand | Composite Maths | Algebraic Expressions and Special Products | myhelper
OPEN IN YOUTUBE
Question 1
Multiply :
(x+2)(x+5)
Sol :
Q2 | Ex-5C | Class 8 | SChand | Composite Maths | Algebraic Expressions and Special Products | myhelper
OPEN IN YOUTUBE
Question 2
(x-4)(x+9)
Sol :
Q3 | Ex-5C | Class 8 | SChand | Composite Maths | Algebraic Expressions and Special Products | myhelper
OPEN IN YOUTUBE
Question 3
(x-7)(x-9)
Sol :
Q4 | Ex-5C | Class 8 | SChand | Composite Maths | Algebraic Expressions and Special Products | myhelper
OPEN IN YOUTUBE
Question 4
$(x^2+5)(x^2-6)$
Sol :
Q5 | Ex-5C | Class 8 | SChand | Composite Maths | Algebraic Expressions and Special Products | myhelper
OPEN IN YOUTUBE
Question 5
$(5 x-3 y)(3 x+4 y)$
Sol :
Q6 | Ex-5C | Class 8 | SChand | Composite Maths | Algebraic Expressions and Special Products | myhelper
OPEN IN YOUTUBE
Question 6
$\left(5 x^{2}+2 y^{2}\right)\left(3 x^{2}-7 y^{2}\right)$
Sol :
Q7 | Ex-5C | Class 8 | SChand | Composite Maths | Algebraic Expressions and Special Products | myhelper
OPEN IN YOUTUBE
Question 7
$\left(3 x+\frac{5 y}{7}\right)\left(2 x-\frac{3 y}{7}\right)$
Sol :
Q8 | Ex-5C | Class 8 | SChand | Composite Maths | Algebraic Expressions and Special Products | myhelper
OPEN IN YOUTUBE
Question 8
$\left(\frac{1}{7} x-\frac{1}{8} y\right)\left(7 x^{2}-8 y^{2}\right)$
Sol :
Q9 | Ex-5C | Class 8 | SChand | Composite Maths | Algebraic Expressions and Special Products | myhelper
OPEN IN YOUTUBE
Question 9
$\left(a^{2}+b^{4}\right)\left(a^{2}-b^{2}\right)$
Sol :
Q10 | Ex-5C | Class 8 | SChand | Composite Maths | Algebraic Expressions and Special Products | myhelper
OPEN IN YOUTUBE
Question 10
Multiply $\left(4 x^{2}+3 y\right)$ by $\left(3 x^{2}-4 y\right)$ and verify the result for $x=1, y=2$
Sol :
Q11 | Ex-5C | Class 8 | SChand | Composite Maths | Algebraic Expressions and Special Products | myhelper
OPEN IN YOUTUBE
Question 11
Simplify :
(i) $\frac{2}{7}\left(14 x^{2}-21 y^{2}\right)\left(-5 x^{2}-3 y^{2}\right)$
(ii) $(2 x-3)(5 x+2)+(3 x-7)(4 x-1)$
Sol :
Q12 | Ex-5C | Class 8 | SChand | Composite Maths | Algebraic Expressions and Special Products | myhelper
OPEN IN YOUTUBE
Question 12
$(2 x+3)\left(3 x^{2}-x-2\right)$
Sol :
Q13 | Ex-5C | Class 8 | SChand | Composite Maths | Algebraic Expressions and Special Products | myhelper
OPEN IN YOUTUBE
Question 13
$(3 x-7)\left(5 x^{2}-2 x+3\right)$
Sol :
Q14 | Ex-5C | Class 8 | SChand | Composite Maths | Algebraic Expressions and Special Products | myhelper
OPEN IN YOUTUBE
Question 14
$\left(x^{2}-2\right)\left(9 x^{2}-2 x+5\right)$
Sol :
Q15 | Ex-5C | Class 8 | SChand | Composite Maths | Algebraic Expressions and Special Products | myhelper
OPEN IN YOUTUBE
Question 15
$(x-3)\left(x^{3}+3 x^{2}-7 x+1\right)$
Sol :
Q16 | Ex-5C | Class 8 | SChand | Composite Maths | Algebraic Expressions and Special Products | myhelper
OPEN IN YOUTUBE
Question 16
$(x+y-3)(4 x-7 y+2)$
Sol :
Q17 | Ex-5C | Class 8 | SChand | Composite Maths | Algebraic Expressions and Special Products | myhelper
OPEN IN YOUTUBE
Question 17
$\left(x^{2}-7 x+2\right)\left(x^{2}+5 x-4\right)$
Sol :
Q18 | Ex-5C | Class 8 | SChand | Composite Maths | Algebraic Expressions and Special Products | myhelper
OPEN IN YOUTUBE
Question 18
$(2 x+3)(3 x-2)(x-5)$
Sol :
Q19 | Ex-5C | Class 8 | SChand | Composite Maths | Algebraic Expressions and Special Products | myhelper
OPEN IN YOUTUBE
Question 19
Simplify :
$(3 x-4)\left(2 x^{2}-5 x+1\right)-(2 x-1)\left(3 x^{2}+7 x-5\right)$
Multiple Choice Questions (MCQs)
Q20 | Ex-5C | Class 8 | SChand | Composite Maths | Algebraic Expressions and Special Products | myhelper
OPEN IN YOUTUBE
Question 20
Which of the following products is equal to $x^{2}-5 x-6 ?$
(a) (x+1)(x-6)
(b) (x-2)(x-3)
(c) (x+2)(x-3)
(d) (x-1)(x-5)
Sol :
Q21 | Ex-5C | Class 8 | SChand | Composite Maths | Algebraic Expressions and Special Products | myhelper
OPEN IN YOUTUBE
Question 21
$(x-y)\left(x^{2}+x y+y^{2}\right)$ equals
(a) $x^{3}-2 x^{2} y+2 x y^{2}-y^{3}$
(b) $x^{3}+y^{3}$
(c) $x^{3}-y^{3}$
(d) $x^{3}+2 x^{2} y-2 x y^{2}+y^{3}$
Sol :
High Order Thinking Skills (HOTS)
Q22 | Ex-5C | Class 8 | SChand | Composite Maths | Algebraic Expressions and Special Products | myhelper
OPEN IN YOUTUBE
Question 22
If (x+4)(x+1)-(x-1)(x-2)=0, what is the value of x ?
Sol :
Q23 | Ex-5C | Class 8 | SChand | Composite Maths | Algebraic Expressions and Special Products | myhelper
OPEN IN YOUTUBE
Question 23
'Write a polynomial that represents the product of three consecutive odd integers, the first one being $(2 x-1)$.
Sol :
No comments:
Post a Comment