Find f(–2) for the function f(x) = 3x2 – 2x + 7.
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f(-2)= 3(-2)^2-2(-2)+7=12+4+7=23
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Given function:
f(x) = 3x^2 - 2x + 7 ---- (A)
f(-2) means that we have to put x = -2 in equation (A):
f(-2) = 3(-2)^2 - 2(-2) + 7
f(-2) = 3*4 + 4 + 7
f(-2) = 12+4+7
f(-2) = 23
frankiefr2005:
thank you
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