Question

5. Evaluate: 6x2 + 9x - 7, when x = 2

Answer 1

23

Explanation:

6×2=12

We know that x=2, so we multiply the coefficient, 9 by 2.

9x

x=2

9(2)

=18

18 plus 12 is 30.

30 minus 7 is 23.

Answer 2

6(2) + 9(2) -7
12+18-7
23