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

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

$- 1, 17$

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$- 1, 27$

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$2, 27$

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$2, 17$

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Solution

The correct option is A
$- 1, 17$

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

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 _______

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

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

y

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

| 2 x + 3 y | < 15

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