Question

Use the identity (x+a) (x+b) = x2 +(a+b)x + ab and find the product of (2x+5y) (2x+3y) . explain in detail​

Answer 1

Answer:

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Answer 2

Step-by-step explanation:

Use the identity (x+a) (x+b) = x2 +(a+b)x + ab and find the product of (2x+5y) (2x+3y) . explain in detail

(2x+5y) (2x+3y)

let, x=2x,a=5y,b=3y

by the identity (x+a) (x+b) = x² +(a+b)x + ab

=(2x)²+(5y+3y)+(5y)(3y)

=4x²+8y+15y²

=4x²+15y²+8y