algebra · worked example

Solve 3x² - 12 = 0

Method: 항을 정리하고 제곱근 구하기. Verified step-by-step solution with our free AI math solver.

Problem

$3x^2 - 12 = 0$

Step-by-step solution

양변에 $12$ 를 더합니다: $3x^2 = 12$ .
양변을 $3$ 으로 나눕니다: $x^2 = 4$ .
양수와 음수 제곱근을 모두 취합니다: $x = \pm 2$ .

Answer

$x = 2 \quad \text{or} \quad x = -2$

Want to solve a different problem? Open the quadratic solver →

Related worked examples