Math, asked by groudon72omega, 10 months ago

Using suitable identity find(7x
3y)^2

Answers

Answered by CandyThulasi

2

Step-by-step explanation:

By using this identity, we get

(7x+3y)2

=(7x)2+(3y)2+2×7x×3y

=49x2+9y2+42xy

This is the required

Answered by k06223302

4

Step-by-step explanation:

21y2

y=21/2

y=10.5

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