Question

Factorize the following by using suitable identity

1) (x+4y)²-16y²​

Answer 1

Answer:

Step-by-step explanation: 9x²-24xy+16y²

(3x)²-2*3x*(-4y)+(4y)²

This is in the form of (a-b)²

a²-2ab+b²= (a-b)²

(3x-4y)(3x-4y)

(3x-4y)²

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Answer 2

(x+4y)^2-4y^2

=(x+4y+4y)(x+4y-4y)

=(x+8y)*x