Question

Simplify each expression.
20) (2x2 +82 + 7x) - (7x + 4- 612)​

Answer 1

40x2+133x+2248

Explanation:

20(2x2+82+7x)−(7x+4−612)

Distribute the Negative Sign:

=20(2x2+82+7x)+−1(7x+4−612)

=20(2x2+82+7x)+−1(7x)+(−1)(4)+(−1)(−612)

=20(2x2+82+7x)+−7x+−4+612

Distribute:

=(20)(2x2)+(20)(82)+(20)(7x)+−7x+−4+612

=40x2+1640+140x+−7x+−4+612

Combine Like Terms:

=40x2+1640+140x+−7x+−4+612

=(40x2)+(140x+−7x)+(1640+−4+612)

=40x2+133x+2248