Question

Find the square 2x-3y
explain step by step
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Answer 1

hello!!

(2x-3y)²

(2x-3y)²using identity (a-b)²=a² + b² -2ab

(2x-3y)² = (2x)² + (3y)² - 2*2x*3y

= 4x² + 9y² - 12xy

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Answer 2

$\left(2x-3y\right)^2$

$\mathrm{Apply\:Perfect\:Square\:Formula}:\quad \left(a-b\right)^2=a^2-2ab+b^2$

$a=2x,\:\:b=3y$

$=\left(2x\right)^2-2\cdot \:2x\cdot \:3y+\left(3y\right)^2$

$=4x^2-12xy+9y^2$