Question

If y = x2 + x -1, find y if x = 3. y =

Answer 1

y=3

Explanation:

y = 3x2 + 3x-1

y = 6 + -3

y = 3

Answer 2

y=8

Explanation:

y=2x+x-1

replace x with 3

y=2(3)+(3-1)

y=6+2

y=8