Question

Simplify 7x2

(3x – 9) + 3(x-1) and find its values for x = -1 and x = 6​

Answer 1

Answer:

when x is -1 --> -18

when x is 6 --> 24

Step-by-step explanation:

when x is -1 :

=[3(-1) -9] + 3(-1-1)

=[-3-9]+3(-2)

=[-12]+(-6)

=(-18)

when x is 6 :

=(3(6)-9)+3(6-1)

=(18-9)+15

=9+15

=24

Answer 2

Answer:

- 16, 20

by step

1. (3x-9)+3(x-1)

= -3-9+(-3)-1

= -12+(-3)-1

= -12+(-4)

= -12-4

= -16

2. (3x-9) + 3(x-1)

= 18-9 + 18 - 1

= 9 + 11

= 9 + 11

= 20