Find the value of the expression when x=2.
2x+2
Given expression is 2x+2
We need to find the value of this expression at x=2
So putting x=2, we get2(2)+2
⇒6
Hence, 6 is the value of the expression when x=2.
30x+2
Find the value of the following expressions, when x = − 1:
(i) 2x − 7 (ii) − x + 2 (iii) x2 + 2x + 1
(iv) 2x2 − x − 2