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Jamison Lyons
Mathematics
15 April, 18:50
Solve for x.
12 = x^2 + 6x
+5
Answers (
1
)
Manatee
15 April, 19:07
0
Answer: x = 1.6 and - 7.6
Step-by-step explanation:
Given the equation 12 = x²+6x
Firstly, we will equate the equation to zero by taking 12 to other side to give;
x²+6x-12 = 0
Using the general formula to solve
If ax²+bx+c=0
x = - b+-√b²-4ac/2a
From the equation given
a = 1 b = 6, c=-12
x = - 6+-√6²-4 (1) (-12) / 2 (1)
x = - 6+-√37+48/2
x = - 6+-√85/2
x = - 6+-9.2/2
x = - 6+9.2/2 and - 6-9.2/2
x = 3.2/2 and - 15.2/2
x = 1.6 and - 7.6
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