Mathematics
30.05.2021 15:29
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Complete the square to determine the maximum or minimum value of the function defined
Complete the square to determine the maximum or minimum value of the function defined by the expression.
-x^2-6x+6
A. minimum value at 3
B. maximum value at 15
C. minimum value at -1
D. minimum value at -6
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A. minimum value at 3
B. maximum value at 15
C. minimum value at -1
D. minimum value at -6
angeline2004
4,4(24 marks)
B. maximum value at 15
Step-by-step explanation:
-x² - 6x + 6 = 0
x² + 6x - 6 = 0
x² + 6x + = 6
x² + 6x + 9 = 6 + 9
(x + 3)² = 15
x + 3 = ±√15
x = - 3 ±√15
So the roots are centered on -3, which will be the x value of the vertex.
-(-3)² - 6(-3) + 6 = y
y = 15
20jacksone
4,7(89 marks)
Its A i just took the test
Step-by-step explanation:
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