# Solve the equation need help for solve?

(X+7)^3/2=8

### 6 Answers

- ranjankarLv 77 years agoBest 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)^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

- NiallLv 77 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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- zuchowskiLv 43 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