Math, asked by gram02292, 2 months ago

(7x+3y)² full answer

Answers

Answered by buttercup25

1

Answer:

We know (a+b)

2

=a

2

+2ab+b

2

By using this identity, we get

(7x+3y)

2

=(7x)

2

+(3y)

2

+2×7x×3y

=49x

2

+9y

2

+42xy

Answered by ishantgupta246836

0

Answer:

(a+b)²=a²+b²+2ab

Step-by-step explanation:

(7x+3y)²=49x²+9y²+2•7x•3y

=49x²+9y²+42xy

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