Question

Simplify the following expression:
3x (7x-4)-(x-8)

Answer 1

`=21x^(2) -13x+8`

Explanation:

Answer 2

=21x2−13x+8

Explanation:

=3x(7x−4)+−1(x−8)

=3x(7x−4)+−1x+(−1)(−8)

=3x(7x−4)+−x+8

Distribute:

=(3x)(7x)+(3x)(−4)+−x+8

=21x2+−12x+−x+8

Combine Like Terms:

=21x2+−12x+−x+8

=(21x2)+(−12x+−x)+(8)

=21x2+−13x+8