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Find the root of x, to get the maximum v...

Find the root of x, to get the maximum value of `-3x^(2) + 6x + 5`.
(a) 1 , (b `5/3` , (c ) `(-5)/(6)` , (d) `6`

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Maximum value of a quadratic expression of occurs at `x = (-b)/(2a)`.
`rArr` For `-3x^(2) + 6x +5`, maximum value occurs at `x = (-6)/(2(-3))`, i.e, 1.
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