5
AssignmentMultiple Select

Completing The Square

Question 5 • 26.27 TCEC ALGEBRA 2.1

Solve (x – 3)2 = 49. Select the values of x.

Answer
A
–46
B
-4
C
10
D
52

Explanation

The exponent 2 means (x − 3)² = 49. Taking the square root gives x − 3 = 7 or x − 3 = −7, so x = 10 or x = −4. These are choice C, 10, and choice B, −4.

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