Question

If x=-1,find the value of the following
-3x{2} +2x-1

Answer 1

Answer:

$- 3 {x}^{2} + 2x - 1$

$x = - 1$

Put in the equation

$= - 3 \times { - 1}^{2} + 2 \times ( - 1) - 1$

$= - 3 - 2 - 1$

$= - 6$