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10 February, 21:35

Solve x2 + 8x = 24.

A. - 4 plus or minus 2 sq root of 2

B. - 4 plus or minus 2 sq root of 10

C. - 4 plus or minus 2 sq root of 5

D. - 4 plus or minus 2 sq root of 7

+4
Answers (2)
  1. 10 February, 21:49
    0
    So is it square root or squared?
  2. 10 February, 21:50
    0
    Hello,

    x²+8x-24=0

    Δ=8²+4*24=160

    ==>x = (-8-4√10) / 2=-4-2√10 or x=-4+2√10

    Answer B
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