Question

If g(x) = 2 x^2 - 3 x , what is the value of g( - 1 )

Answer 1

g(1)=5

Explanation:

`g(x)=2x^2-3x\\We\ find\ g(-1)\ by\ just\ substituting\ x\ with\ -1\ on\ the\ RHS.\\g(-1)=2(-1)^2-3*-1\\g(-1)=2*1+3\\g(-1)=2+3\\g(-1)=5`

Answer 2

5

Explanation:

2x^2-3x replace x with -1

2(-1)^2-3(-1)

2+3

5