Answer: 23
Step-by-step explanation:
2(-3)^2+3(-3)-4 = -6^2+-9-4 = 36 - 13 = 23
Answer:
The solution for f(-3) in f(x) = [tex]2 x^{2} + 3 x - 4[/tex] is 5
Solution:
From question, the given equation is,
f(x) = [tex]2 x^{2} + 3 x - 4[/tex] ------------------ eqn 1
We have to find the value of f(-3), hence put x = -3 in equation 1
By substituting x = -3 equation 1 becomes,
f(-3) = [tex]2 x^{2} + 3x - 4[/tex]
On solving the above equation, we get
f(-3) = 2(9) – 9 – 4
f(-3) = 18 – 9 – 4
f(-3) = 9 - 4 = 5
Hence the value of f(-3) = 5
