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ser-zykov [4K]
3 years ago
14

When a number is added to six times its square, the result is twelve. Find the number.

Mathematics
2 answers:
iVinArrow [24]3 years ago
7 0
Answer: <span>x = -3/2 and 4/3</span>
7nadin3 [17]3 years ago
6 0
Let's represent our number as x.
x is being added to 6 * x², and it equals 12
x + 6x^{2}=12\\6x^{2}+x-12=0
Factor:
6x^{2}+x-12=0\\(2x+3)(3x-4)=0
Solve for x:
(2x+3)=0\\2x=-3\\x=\frac{-3}{2}\\\\(3x-4)=0\\3x=4\\x=\frac{4}{3}

Therefore, x = -3/2 and 4/3.
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