2x2-1 when x = 3
= 2 · 3 · 2 - 1
= 6 · 2 - 1
= 12 - 1
= 11.
Hope this helps,
Davinia.
If x = 3, the expression becomes:
2 * 3 * 2 - 1
6 * 2 - 1
12 - 1
11
Hope it helped,
BioTeacher101
