Question

8w2 + 2w - 3
What is the value of the expression below when w = 2?

Answer 1

33

Explanation:

8w2 + 2w - 3

w = 2

substitute w for 2:

(8 x 2 x 2) + (2 x 2) - 3

solve:

32 + 4 - 3

33

Answer 2

33

Explanation:

8 x 2^2 + 4 - 3= 8x4+1=33