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30 March, 15:10

Solve each equation by graphing. Round to the nearest tenth.

-2x²+2 = - 3x

A) - 1, - 2

B) 2, - 0.5

C) - 1, 2

D) 0.5, - 3

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Answers (1)
  1. 30 March, 16:27
    0
    B

    rearrange into standard form : ax² + bx + c = 0 (a≠ 0)

    2x² - 3x - 2 = 0

    (x - 2) (2x + 1) = 0 (equate each factor to zero and solve for x)

    x - 2 = 0 ⇒ x = 2

    2x + 1 = 0 ⇒ x = - 0.5
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