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10-07-2020
Mathematics

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Solve by completing the square. x2−12x=−27 Select each correct answer. −9 −3 3 9 15

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Percivle Percivle

10-07-2020

Answer:

x=9,3

Step-by-step explanation:

x²-12x=-27

x²-12x+(12/2)²=-27+(12/2)²

x²-12x+6²=-27+36

(x-6)²=9

x-6=[tex] \frac{ + }{ - } \sqrt{9} [/tex]

x-6=+3 and x-6=-3

x=9 and 3

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