Given f(x) = 2x 4 - 3x 2 - 8x + 4, what is f(3)?
A. 88
B. 115
C. 131
D. 133
A?
2(81) - 3(9) - 8(3) + 4 = 115
Oh , Thank you so much
To find the value of f(3), you need to substitute 3 into the given equation, f(x) = 2x^4 - 3x^2 - 8x + 4, in place of x.
So, replace x with 3:
f(3) = 2(3)^4 - 3(3)^2 - 8(3) + 4
Calculating this expression:
f(3) = 2(81) - 3(9) - 24 + 4
f(3) = 162 - 27 - 24 + 4
f(3) = 115
Therefore, the value of f(3) is 115, which corresponds to option B.