Complete the square for 3x^2-6x=21. leave your answer in the form (____)^2=(____)
2 answers:
X^2-2x=7
x^2-2x+1=7+1
(x-1) ^2=8
Answer: (x - 1)² = 8
<u>Step-by-step explanation:</u>
3x² - 6x = 21
<u>÷3 </u> <u> ÷3 </u> <u> ÷3 </u>
x² - 2x = 7
x² - 2x + ___ = 7 + ___
↓ ↑ ↑
x² - 2x + <u> 1 </u> = 7 + <u> 1 </u>
(x - 1)² = 8
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