Question

(1.1x+2.7y)(1.1x-2.7y)​

Answer 1

Answer:

Final answer is

1.1x²-2.7y²

as here we use the formula

A²-B² =(A+B)(A-B)

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Answer 2

$\huge \sf \green{\underline { \underline{Given:-}}}$

$\sf{(1.1x + 2.7y)(1.1x - 2.7y)}$

$\huge \sf \pink{\underline { \underline{Formula\: to\: use:-}}}$

(a-b)(a+b)=(a²-b²)

$\huge \sf \purple{\underline { \underline{Answer:-}}}$

$\tt{ {(1.1x)}^{2} - {(2.7y)}^{2} }$

$\mathfrak{ = 1.21 {x}^{2} -7.29 {y}^{2} }$