Question

(4x + y) sq using suitable identity

Answer 1

Answer:

Since (a+b)

2

=a

2

+2ab+b

2

∴(−4x+2yz)

2

=(−4x)

2

+2(−4x)(2yz)+(2yz)

2

=16x

2

−16xyz+4y

2

z

2

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Answer 2

Answer:

identity used: (a+b)²

( a+b)²=a²+2ab+b²

Step-by-step explanation:

ATQ : 4x²+2(4x)(y)+y²

4x²+8xy+y²