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seraphim [82]
3 years ago
7

What is the negative solution to this equation? 4x^2+12x=135​

Mathematics
1 answer:
Scrat [10]3 years ago
6 0

Answer:

-\frac{15}{2}

Step-by-step explanation:

\mathrm{Subtract\:}135\mathrm{\:from\:both\:sides}

4x^2+12x-135=135-135

\mathrm{Simplify}

4x^2+12x-135=0

x1, 2=−b±√b2−4ac2a For     a=4, b=12, c=−135x1, 2=−12±√122−4· 4(−135)2· 4

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a_sh-v [17]

Answer:

x=√-5

Step-by-step explanation:

8-3x=√(4x^2+20)+8

-8                          -8

-3x^2=√(4x^2+20)^2

-3x^2=4x^2+20

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divide both sides by -4

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3 years ago
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Harman [31]

Answer:

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Step-by-step explanation:

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3 years ago
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Answer:

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Step-by-step explanation:

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Replace f(x) in the equation with what it equals:

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Step-by-step explanation:

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