Simplify $- 4 x (- 5 + 4 x) - 2 x$ $-4x(-5+4x)-2x$ ?

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Answer 1 · 2016-05-18T05:41:36

$- 4 x (- 5 + 4 x) - 2 x = 20 x - 8 x^{2}$ $-4x(-5+4x)-2x=20x-8x^2$ ko

$- 4 x (- 5 + 4 x) - 2 x$ $-4x(-5+4x)-2x$

= $(- 4 x) (- 5) + (- 4 x) (4 x) - 2 x$ $(-4x)(-5)+(-4x)(4x)-2x$

= $20 x + (- 16 x^{2}) - 2 x$ $20x+(-16x^2)-2x$

= $20 x - 16 x^{2} - 2 x$ $20x-16x^2-2x$

= $18 x - 16 x^{2}$ $18x-16x^2$

Answer 2 · 2016-05-18T05:59:19

$- 4 x (- 5 + 4 x) - 2 x = - 16 x^{2} - 18 x$ $-4x(-5+4x)-2x=color(blue)(-16x^2-18x)$

$- 4 x (- 5 + 4 x) - 2 x$ $-4x(-5+4x)-2x$

The expression inside the parentheses cannot be simplified further and there are no exponents.

Multiply $- 4 x$ $-4x$ times the expression inside the parentheses.

$- 4 x (- 5 + 4 x) - 2 x =$ $-4x(-5+4x)-2x=$

$20 x - 16 x^{2} - 2 x$ $20x-16x^2-2x$

Rewrite the expression in standard form.

$- 16 x^{2} + 20 x - 2 x$ $-16x^2+20x-2x$

Simplify.

$- 16 x^{2} + 18 x$ $-16x^2+18x$

Simplify -4x(-5+4x)-2x−4x(−5+4x)−2x-4x(-5+4x)-2x?