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olchik [2.2K]
3 years ago
6

Solve for x in the equation x2 - 12x+ 36 = 90

Mathematics
1 answer:
12345 [234]3 years ago
6 0

Answer:

6 + 3\sqrt{10\\} or 6 - 3\sqrt{10\\}

Step-by-step explanation:

x^2 - 12x + 36 = 90

x^2 - 12x - 54 = 0

x = \frac{-b +/- \sqrt{b^{2} + 4ac }}{2a}

a = 1, b= -12, c= -54

6 + 3\sqrt{10\\} or 6 - 3\sqrt{10\\}

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