Solve the equation need help for solve?

(X+7)^3/2=8

6 Answers

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  • 7 years ago
    Best Answer

    Let ( x+7) be = a

    a ^3/2 = 8

    a^3/2 = 2^3

    CUBE ROOT BOTH SIDES

    a^1/2 = 2

    a = 4

    x+7 = 4

    x = -3 ANSWER

    CHECK

    ( x+7) ^3/2 = ( -3 + 7) ^3/2 = 4 ^3/2 = 64^1/2 = 8

  • 7 years ago

    x+7=8^2/3

    x+7=4

    x=-3

  • 7 years ago

    (X+7)^3/2=8

    or, {(X+7)^3/2}^2 = 8^2

    or, (X+7)^3 = 64

    or, {(X+7)^3}^1/3 = 64^1/3 [^1/3 => cube root]

    or, X+7 = 4

    or, X = 4-7

    or, X = -3

  • Niall
    Lv 7
    7 years ago

    Power both sides by the reciprocal (fraction flipped 2/3):

    x + 7 = 4

    Subtract 7 from both sides:

    x = -3

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  • 3 years ago

    3t + a million < t + 12 (subtract t from the two factors) 2t + a million < 12 (subtract a million from the two factors) 2t < 11 (divide the two factors with the help of employing 2) t < 11/2 the biggest complete type value of t that satisfies the inequality is 5.

  • 7 years ago

    42, joking.. that's just the answer to life =P

    But on the serious side, i have tried and it has confused me, i'm not this good at maths

    Source(s): Life
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