# Select the two values of the x that are roots of the given polynomial below. 3x^2+20x-7

QUESTION POSTED AT 29/05/2020 - 01:16 AM

QUESTION POSTED AT 29/05/2020 - 01:16 AM

3x² + 20x - 7 =

3x² + 21x - x - 7 =

3x(x+7) - (x+7) =

(3x-1)(x+7)

3x-1 = 0 or x+7 = 0

x = -1/3 x=-7

Answer: -7, -1/3.

3x² + 21x - x - 7 =

3x(x+7) - (x+7) =

(3x-1)(x+7)

3x-1 = 0 or x+7 = 0

x = -1/3 x=-7

Answer: -7, -1/3.

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