Question

simplify (9x - 2y)² please don't scam please ans me correctly please
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Answer 1

Answer:

We know that (a+b)²=a²+b²+2ab

(9x+2y)²= (9x)²+(2y)²+2(9x)(2y)

⇒81x²+4y²+36xy

HOPE THIS HELPS:-)

Answer 2

Step-by-step explanation:

$we \: know \: that \\ (a - b {)}^{2} = {a}^{2} + {b}^{2} - 2ab \\ hence (9x - 2y {)}^{2} \\ = {(9x)}^{2} + ({2y)}^{2} - 2 \times 9x \times 2y \\ = 81 {x}^{2} + 4 {y}^{2} - 36xy$