algebra,math

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Solve the equation. Check both solutions and only write the real solution.

the square root of 6m minus 5 = m
A. {1}
B. {5}
C. {1, 5}
D. no real solution

I think its B

  • algebra,math -

    √(6m) - 5 = m
    √(6m) = m+5
    square both sides
    6m = m^2 + 10m + 25
    m^2 + 4m + 25 = 0
    m = (-4 ± √-84)/2

    no real solution

    if you think it is B), why not check it

    LS = √30 - 5
    RS = 5

    mmmhhh

    However, if you meant:
    √(6m-5) = 5
    then 6m-5 = 25
    6m = 30
    m = 5

    See what happens if you don't use brackets to avoid ambiguity?

  • algebra,math -

    U tried bt itz wrong . .ansa iz a . . 6m - 5 =m . Colect lyk terms . 6m -m =5 . 5m =5 . Then m =1 .

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