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Today, 19:50
Solve with quadratic formula (x) (x) - 13x+42=0
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Tucker Mccarty
Today, 20:18
0
X² - 13x + 42 = 0
x = - (-13) + / - √ ((-13) ² - 4 (1) (42))
2 (1)
x = 13 + / - √ (169 - 168)
2
x = 13 + / - √ (1)
2
x = 13 + / - 1
2
x = 13 + 1 x = 13 - 1
2 2
x = 14 x = 12
2 2
x = 7 x = 6
It is equal to {7, 6}.
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