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Mathematics
Guest
20 July, 06:18
Solve the equation.
x2 - x - 12 = 0
+4
Answers (
2
)
Shea Mcmillan
20 July, 07:00
0
x=4 and - 3
Step-by-step explanation:
Move all terms to the left side and set equal to zero. Then set each factor equal to zero.
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Andreas Schaefer
20 July, 09:16
0
x = 4 or x = - 3
Step-by-step explanation:
Solve for x over the real numbers:
x^2 - x - 12 = 0
The left hand side factors into a product with two terms:
(x - 4) (x + 3) = 0
Split into two equations:
x - 4 = 0 or x + 3 = 0
Add 4 to both sides:
x = 4 or x + 3 = 0
Subtract 3 from both sides:
Answer: x = 4 or x = - 3
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