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(2x+3y)²=4x²+6xy+6xy+9y²
(2x+3y)²=4x²+12xy+9y²
1) realizas el cuadrado de un binomio
(2x + 3y)^2
(2x)^2 + 2(2x)(3y) +(3y)^2
4x^2+12xy+9y^2
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