Question

find the square (2x - 3y)
answer step by step explaination please.

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Answer 1

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

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

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

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

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

Answer 2

Answer:

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

Step-by-step explanation:

(2x-3y)^2

= 2(2x^2) - 2(2x)(3y) + 2(3y^2)          (using the identity (a-b)^2 = a^2 -2ab+b^2)

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