A: The minimum value of 'y' for the expression y = 2 $x^{2}$ + 4x + 5 occur at x =

B: The maximum value of expression -3 $x^{2}$ + 12x + 5 is _

2,27

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2,17

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-1,27

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-1,17

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Solution

The correct option is D
-1,17

A: The minimum value occurs at $x = \frac{- b}{2 a} = \frac{- 4}{2 (2)} = - 1$
B: The maximum value $= \frac{4 a c - b^{2}}{4 a} = 17$

Suggest Corrections

Similar questions

The expression $- 5 x^{2} + 4 x + 3$ , has

y = a x^{2} + b x + c, a < 0.

y

y = | x - 9 | - | x + 2 |

y = 5 x^{2} - 10 x

y = | x + 3 | + | x + 1 | + | x - 5 |

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