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Mekhanik [1.2K]
3 years ago
9

Find the vertex of this function f(x)= x^2+4x-12

Mathematics
1 answer:
sergij07 [2.7K]3 years ago
7 0
F(x) = x² + 4x - 12

x = -b/2a
x = -(4)/2(1)
x = -4/2
x = 2

f(x) = x² + 4x - 12
f(2) = (2)² + 4(2) - 12
f(2) = 4 + 8 - 12
f(2) = 12 - 12
f(2) = 0

The vertex of the function is (2,0).
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Given

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Required

The words that describe the equations

Make y the subject in (2)

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Collect like terms

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Substitute: y = 2 - 3x in (1)

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