Question

4x²-12xy +9y²
simplify

Answer 1

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

=(2x) ^2-2.2x.3y+(3y) ^2

=(2x-3y) ^2

=(2x-3y)(2x-3y)

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Answer 2

$( {a - b)}^{2} = {a}^{2} + {b}^{2} - 2ab$

by solve

$(2 {x})^{2} - 2 \times 2x \times 3y + (3 {y})^{2}$

$( {2x - 3y)}^{2}$