Question

M=(2x+3)2 - (2x-3)2 +4 (5-6x) productos notables 1 porfavor ayudenme

Answer 1

Explicación paso a paso:

ok :#######################

Answer 2

Respuesta:

M = 20

Explicación paso a paso:

$M=\left(2x+3\right)^2-\left(2x-3\right)^2+4\left(5-6x\right)$

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• $\left(2x+3\right)^2$

$=\left(2x\right)^2+2\cdot \:2x\cdot \:3+3^2\\=4x^2+12x+9$

• $\left(2x-3\right)^2$

$=\left(2x\right)^2-2\cdot \:2x\cdot \:3+3^2\\=4x^2-12x+9$

• $4\left(5-6x\right)$

$=4\cdot \:5-4\cdot \:6x\\=20-24x$

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$M=4x^2+12x+9-4x^2+12x-9+20-24x\\M=4x^2+12x+9-4x^2+12x-9+20-24x\\M=12x+12x-24x+9-9+20\\M=9-9+20\\M=20$