algebra · worked example

Solve x² = 100

Method: raiz quadrada. Verified step-by-step solution with our free AI math solver.

Problem

$x^2 = 100$

Step-by-step solution

Extraia a raiz quadrada positiva e negativa de ambos os lados.
$x = \pm\sqrt{100} = \pm 10$ .
Sempre inclua os dois sinais — elevar ao quadrado perde a informação de sinal.

Answer

$x = 10 \quad \text{or} \quad x = -10$

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