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23 November, 14:35

What is the solution set of x2 - 10 = 30x? {-220, 250} {-250, 220} {15 -, 15 + } {-15 -, - 15 + }

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  1. 23 November, 14:37
    0
    x^2 - 10 = 30x

    x^2 = 30x + 10

    x^2 - 30x = 10

    x^2 - 30x + 225 = 235

    (x - 15) ^2 = 235

    x - 15 = √235

    x = 15 ± √235 is the solution set.
  2. 23 November, 14:40
    0
    Option C on E2020

    Step-by-step explanation:

    Just got it correct on the assignment.
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