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How do you multiply $(5 + x) (2 x + - 10)$ $(5 + x)(2x + -10)$ ?

1 Answer

Jul 29, 2016

$2 x^{2} - 50$ $2x^2-50$

Explanation:

$(5 + x) (2 x + - 10)$ $(5+x)(2x+ -10)$

It must be written as

$(5 + x) [2 x + (- 10)]$ $(5+x)[2x+ (-10)]$

Remove the inner most bracket

$(5 + x) [2 x - 10]$ $(5+x)[2x -10]$

Now Multiply

$10 x + 2 x^{2} - 50 - 10 x$ $10x+2x^2-50-10x$

$2 x^{2} - 50$ $2x^2-50$

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