SAT Nonlinear equations in one variable and systems of equations in two variables Practice Question 1 (Easy)

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Question bank / Nonlinear equations in one variable and systems of equations in two variables

Math · Advanced MathEasy

What is the positive solution to the equation $x^2 = 49$ ?

$7$

$14$

$24.5$

$49$

Show answer and explanation

Answer: A

Take the square root of both sides: $x = 7$ or $x = -7$ . The positive solution is 7.

Choice C divides 49 by 2 instead of taking the square root.

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