Question #9d307

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Answer 1 · 2017-03-13T03:07:47

$- 20 n + 40$ $-20n+40$

$- 5 (4 n - 8) = (- 5 \cdot 4 n) + (- 5 \cdot - 8) = - 20 n + 40$ $-5(4n-8)=(-5*4n)+(-5*-8)=-20n+40$

Answer 2 · 2017-03-13T03:10:56

$- 20 n + 40$ $-20 n + 40$

The distributive property means to multiply all the numbers inside parenthesis by the number(s) outside of the parenthesis.

So $- 5 (4 n - 8) = - 5 \times 4 n - 5 \times - 8$ $-5(4n-8) = -5 xx4n - 5 xx -8$

$- 5 \times n = - 20 n$ $-5 xx n = -20n$ ( a negative times a positive = a negative)

Think about it this way negative can mean to take away a positive can mean something good so to take away something good is bad. or negative.

$- 5 \times - 8 = + 40$ $-5 xx -8 = + 40$ ( a negative times a negative = a positive)

Think about it this way to take away a something bad is good or positive.

so $- 5 \times 4 n - 5 \times - 8 = - 20 n + 40$ $- 5 xx 4n - 5 xx -8 = -20n + 40$