How do you multiply $(5 + x)(3 - 2x)$ ?

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Answer 1 · 2015-08-16T08:10:57

$=color(blue)(2x^2 - 7x +15$

$color(blue)((5+x))(3−2x)$

$=color(blue)((5)) * (3)+color(blue)((5)) * (-2x) + color(blue)(x) *(3) + color(blue)(x) .(-2x)$

$=15-10x +3x-2x^2$

$=color(blue)(2x^2 - 7x +15$

How do you multiply (5 + x)(3 - 2x)(5 + x)(3 - 2x)?