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1 October, 07:14

Find the solutions to the equation below.

Check all that apply.

25x2 - 100 = 0

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Answers (1)
  1. 1 October, 10:49
    0
    x = - 2, 2

    Step-by-step explanation:

    this one is easy since we can just use squres to factor

    (5x - 10) (5x + 10)

    we want one positive one and one negative one since there is no middle term.

    so basically we finde the solution by setting each part of the binomial = to zero

    like this

    5x - 10 = 0

    + 10 + 10

    5x = 10

    divide by 5 on both sides of the equal sign

    x = 2

    and

    5x + 10 = 0

    -10 - 10

    5x = - 10

    divide by 5 on both sides of the equal sign

    x = - 2

    therefore the solutions (AKA the zeroes) are x = - 2, 2
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