Radicals Help!?

Solve this equation: √-2 + 8x = √-44 + 2x

-2 and 8x are under the √ 

-44 and 2x are under the √

3 Answers

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  • 3 months ago

    sqrt(-2+8x)=sqrt(-44+2x)

    x= -7

  • rotchm
    Lv 7
    3 months ago

    You can use parentheses:  ( and )

    √(-2 + 8x) = √(-44 + 2x)

    Much clearer & simpler that ways! If by chance you don't have access to them, you can use brackets [ & ] or something similar. 

  • (8x - 2)^(1/2) = (2x - 44)^(1/2)

    Square both sides

    8x - 2 = 2x - 44

    8x - 2x = -44 + 2

    6x = -42

    x = -7

    If we're permitted to use complex values, then x = -7 works.

    If not, then x = -7 is extraneous and there is no solution.

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