Question

Evaluate 2x2-1 when x = 3

Answer 1

If x = 3, the expression becomes:

2 * 3 * 2 - 1

6 * 2 - 1

12 - 1

11

Hope it helped,

BioTeacher101

Answer 2

2x2-1 when x = 3

= 2 · 3 · 2 - 1

= 6 · 2 - 1

= 12 - 1

= 11.

Hope this helps,

Davinia.