Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

**Oculus8596****Banned**- From: Great Lakes,Illinois
- Registered: 2024-09-18
- Posts: 126

Given x^2/(3^2) = 3/x, find x.

I quickly think of cross-multiplication.

(x^2)(x) = (3^2)(3)

x^3 = 9 • 3

x^3 = 27

Take the cube root on.both sides of the equation.

cuberoot{x^3} = cuberoot{27}

x = 3

The best things in life are not always free.

Offline

**Bob****Administrator**- Registered: 2010-06-20
- Posts: 10,583

Correct.

Bob

Children are not defined by school ...........The Fonz

You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei

Sometimes I deliberately make mistakes, just to test you! …………….Bob

Offline

**Oculus8596****Banned**- From: Great Lakes,Illinois
- Registered: 2024-09-18
- Posts: 126

Bob wrote:

Correct.

Bob

Of course, not all questions will be this simple but returning to basic math occasionally is a good idea.

The best things in life are not always free.

Offline