Question

square of 2x²-3y² is​

Answer 1

Answer:

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Step-by-step explanation:

Solution

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(2x+3y)

2

=(2x)

2

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

2

=4x

2

+12xy+9y

2

Aliter: (2x+3y)

2

=(2x+3y)(2x+3y)

=2x(2x+3y)+3y(2x+3y)

=(2x)(2x)+(2x)(3y)+(3y)(2x)+(3y)(3y)

=4x

2

+6xy+6yx+9y

2

[∵xy=yx]

(2x+3y)

2

=4x

2

+12xy+9y

2

Answer 2

Answer:

(a−b)(a+b)

(2x−3y)(2x+3y)

Step-by-step explanation:

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