QQuestionMathematics
QuestionMathematics
"Which choice correctly shows the solution(2$) of the equation x^2 = 400?
A. x= 20
B. x=−20
C. x=±20
D. x= 400"
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Answer
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Step 1: Identify the solutions of the equation.
The solutions of the equation $x^2 = 400$ are the values of $x$ that make the equation true.
We can find these values by taking the square root of both sides of the equation.
Step 2: Take the square root of both sides.
\sqrt{x^2} = \sqrt{400}
Final Answer
x = 20$, which corresponds to option (C) $x = \pm 20$.
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