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Goryan [66]
3 years ago
6

Solve the equation using the quadratic formula. 3x^2-18=-6 a) x = ± 6 b)x = ± 2 c)x = 6 d)x = 2

Mathematics
1 answer:
Alex777 [14]3 years ago
5 0

Answer: B x=+-2

Step-by-step explanation:

The Quadratic formula is -b+--b+-\sqrt{(b^{2} -4ac)} /2a

First make everything equal to 0

3x^2-18+6=0

Then Simplify

3x^2-12=0

Now use the formula where a=3, b=0, and c=-12

0+-\sqrt{0^2-4(3)(-12)  divided by 2(3)

0+-\sqrt{0-(-144)}/6

\frac{0+-12}{6}

then we get 12/6 and -12/6 which simplified is +-2

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tekilochka [14]

80% = 0.8

100% = 1

0.8 = 72

1 = x

0.8* x = 72 * 1

x = 72 / 0.8 = 90

0.8 * 90 = 72

80% * 90 = 72

5 0
3 years ago
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Dominik [7]

Answer:

a^3 + b^3

Step-by-step explanation:

(a + b)(a^2-ab+b^2)

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final answer

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3 years ago
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Trava [24]

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hope this helps

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3 years ago
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IRINA_888 [86]
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7 0
3 years ago
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Answer:

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8 0
3 years ago
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