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21 May, 18:07

Solve.

5q2 + 20 = 425

Question 2 options:

{-9, 9}

{-81, 81}

{-85, 85}

{-9, 81}

+3
Answers (2)
  1. 21 May, 18:35
    0
    5q^2 = 405

    q^2 = 81

    q = 9, - 9
  2. 21 May, 20:46
    0
    {-9, 9}

    Step-by-step explanation:

    5q² + 20 = 425

    5q² = 405

    q² = 81

    q = 9, - 9
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