f(x)= -(x)^3+11(x)^2-8(x)+7 find f(-2)
College? Can you substitute -2 for x and compute? I will be happy to critique your work.
f(x)= -(-2)^3+11(-2)^2-8(-2)+7 find f(-2)
f(-2)=8+44+16+7=75
25a-20ab+4b=
To find f(-2), you need to substitute -2 into the equation for x in the function f(x). Here's how to do it step-by-step:
1. Start with the given function: f(x) = -(x)^3 + 11(x)^2 - 8(x) + 7.
2. Replace every instance of x with -2 in the equation.
So, f(-2) = -(-2)^3 + 11(-2)^2 - 8(-2) + 7.
3. Simplify the expression within the parentheses and exponents.
Remember, (-2)^3 is -8, and (-2)^2 is 4. So, the equation becomes:
f(-2) = -(-8) + 11(4) - 8(-2) + 7.
Now, we convert the negative sign in front of the first term of the equation into a positive value:
f(-2) = 8 + 44 + 16 + 7.
4. Perform the remaining calculations according to the order of operations.
f(-2) = 75 + 16 + 7 = 98.
Therefore, f(-2) = 98.