Math, asked by kinjalraj200, 7 months ago

simplify
(3x+7y)^2-(3z-7y)^2

Answers

Answered by vidhi0705

0

Answer:

9x2+42xy+42yz−9z2

Step-by-step explanation:

Distribute:

=9x2+42xy+49y2+−49y2+42yz+−9z2

Combine Like Terms:

=9x2+42xy+49y2+−49y2+42yz+−9z2

=(9x2)+(42xy)+(49y2+−49y2)+(42yz)+(−9z2)

=9x2+42xy+42yz+−9z2

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