7. Square of 3x – 4y is – InterviewSolution

1.

7. Square of 3x – 4y is

Answer»

We know that,

(a−b)

2

=a

2

+b

2

−2ab

∴(3X−4Y)

2

=(3x)

2

+(4y)

2

−2(3x)(4y)

2

+16y

2

−24xy

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