Question

3. Simplify the expressions and evaluate them
as directed

(iii) 7x (x2 - x + 1) for x = -1 and x = 2
​

Answer 1

Step-by-step explanation:

14x²-7x²+7x

14(-1)²-7(-1)²+(-7)

14-7-7

0

14(2)²-7(2)²+7(2)

14×4-7×4+14

42