Solve the following question:

x = 2, x = 8

Step-by-step explanation:

reminder that f'(x) =

Differentiate f(x) term by term using the power rule

(a )  = na

f(x) = x³ - 5x² + 2x + 10

f'(x) = x² - 10x + 2

Equating f'(x) to - 14

x² - 10x + 2 = - 14 ( add 14 to both sides )

x² - 10x + 16 = 0 ← in standard form

(x - 2)(x - 8) = 0 ← in factored form

Equate each factor to zero and solve for x

x - 2 = 0 ⇒ x = 2

x - 8 = 0 ⇒ x = 8

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step-by-step explanation:

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