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Aloiza [94]
3 years ago
9

Use the quadratic formula to solve x² + 9x + 10 = 0. What are the solutions to the equation?

Mathematics
1 answer:
jok3333 [9.3K]3 years ago
6 0

Answer:

-1.30\ and\ -7.70 (2 decimal places)

Step-by-step explanation:

Quadratic Formula: x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}

-----------------------------------------------

x^2+9x+10=0

Plug in values:

x=\frac{-9\pm \sqrt{9^2-4\cdot \:1\cdot \:10}}{2\cdot \:1}

First value of x:

x=\frac{-9+\sqrt{41}}{2}=-1.30 (2 decimal places)

Second value of x:

x=\frac{-9-\sqrt{41}}{2}=-7.70 (2 decimal places)

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I need help.. 
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This is exactly like the one with the 'n's that you posted yesterday.
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<span><u>7k/8 - 3/4 - 5k/16 = 3/8</u>

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if you need it.<u />

In your question, you said you need help, and I showed you how to
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Giving you the answer is no help.  Nobody actually needs the answer.
</span>


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