Question

$the \: extreme \: value \: of \: - {3x}^{2} + 4x + 15$
plzz answer it fastly
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Answer 1

Answer:

this answer (x+3),(3x-5)

Answer 2

Step-by-step explanation:

$3x {}^{2} + 4x + 15 \\ 3x {}^{2} + 9x - 5x + 15 \\ 3x(x + 3) - 5(x + 3) \\ (3x - 5) = 0 \: and \: (x + 3) = 0 \\ 3x = - 5 \: \: \: \: andx = - 3 \\ x = \frac{ - 5}{3} \: and \: x = - 3$

therefore the answer is x=-5/3 and x=-3

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