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Rs aggarwal solutions
Grade 8 
Mathematics
Mathematics class 8th RS Aggarwal
Factorisation
Factorisation Exercise 7E
Question 2
Mathematics
Mathematics class 8th RS Aggarwal
Factorisation
Factorisation Exercise 7E
Question 2
Factorisation | Factorisation Exercise 7E
Question 2
\left(2x-32x^3\right)=?
a. 2(x-4)(x+4
\text{ b. }2x(1-2x)^2
\text{ c. }2x(1+2x)^2
d. 2x(1-4x)(1+4x)
let us consider \left(2 x-32 x^{3}\right)=2 x\left(1-16 x^{2}\right) by taking 2x as the common factor
By using the formula a^{2}-b^{2}=(a-b)(a+b)
= 2x (1 – 4x) (1 + 4x)
Question 2
\left(2x-32x^3\right)=?
a. 2(x-4)(x+4
\text{ b. }2x(1-2x)^2
\text{ c. }2x(1+2x)^2
d. 2x(1-4x)(1+4x)
let us consider \left(2 x-32 x^{3}\right)=2 x\left(1-16 x^{2}\right) by taking 2x as the common factor
By using the formula a^{2}-b^{2}=(a-b)(a+b)
= 2x (1 – 4x) (1 + 4x)
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