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julia-pushkina [17]
3 years ago
8

Simplify 18 - 2[x + (x - 5)].

Mathematics
1 answer:
Phoenix [80]3 years ago
7 0
First, distribute what's inside the parenthesis, and change all the subtractions to addition of negatives.

18 + -2 (x^2 + - 5x)

Next distribute the -2

18 + -2x^2 + 10x

Then I like to rearrange stuff to put it in standard form.

-2x^2 + 10x + 18
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