the value of -x^2(2x-1) when x=-2 is
To find the value of the expression -x^2(2x-1) when x=-2, we can substitute -2 for x in the expression.
So, the expression becomes:
-(-2)^2(2(-2)-1)
Simplifying further,
-(-2)^2(2(-2)-1) = -4(2(-2)-1)
= -4(4-1)
= -4(3)
= -12
Therefore, the value of -x^2(2x-1) when x=-2 is -12.