Question

Solve 3x2 + 18x + 15 = 0 by completing the square. 3(x + 3)2 = 6; x = −3 + square root 2, x = −3 − square root 2 3(x + 9)2 = 12; x = −11, x = −7 3(x + 3)2 = 12; x = −5, x = −1 3(x + 9)2 = 228; x = −9 + square root 76, x = −9 − square root 76

Answer 1

3(x + 3)2 = 12; x = -5, x = -1

Answer 2

Hey there!

I took the test, and I can confirm that 3(x + 3)2 = 12; x = -5, x = -1 is the CORRECT answer

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