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28 August, 00:26

Complete the equivalent equation for - 7x - 60 = x2 + 10x.

*) (x + ) = 0

What are the solutions of - 7x-60 = x2 + 10x?

(x +

XED

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Answers (1)
  1. 28 August, 01:33
    0
    x = - 5

    x = - 12

    Step-by-step explanation:

    - 7x - 60 = x^2 + 10x

    add 7x to both sides

    x^2 + 17x = - 60

    add 60 to both sides

    x^2 + 17x + 60 = 0

    factorise quadratic

    (x + 12) (x + 5) = 0

    x = - 12

    x = - 12x = - 5
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