(x-9y)*(x+9y)
any answer
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Answered by
2
a+b(a-b)=a²-b²
=x-9y(x+9y)
=x²-(9y)²
=x²-81y²
hope it helps you
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Answered by
1
Answer:
(x-9y)(x+9y)
here we use identity (a+b)(a-b)=a²-b²
x² -(9y)²
x²-81y²
i hope it helps u
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