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nekit [7.7K]
3 years ago
13

Solve this quadratic equation by completing the square x^2+8x=10

Mathematics
1 answer:
AURORKA [14]3 years ago
6 0

Answer:

1.1 ,-9.1

Step-by-step explanation:

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Heyy can you please help me posted picture of question
vichka [17]
We can use quadratic formula to determine the roots of the given quadratic equation.

The quadratic formula is:

x= \frac{-b+- \sqrt{ b^{2} -4ac} }{2a}

b = coefficient of x term = 4
a = coefficient of squared term = 1
c = constant term = 7

Using the values, we get:

x= \frac{-4+- \sqrt{16-4(1)(7)} }{2(1)} \\  \\ 
x=  \frac{-4+- \sqrt{-12} }{2}   \\  \\ 
x= \frac{-4+-2 \sqrt{-3} }{2} \\  \\ 
x= -2+- \sqrt{-3}

So, the correct answer to this question is option A
7 0
3 years ago
The sum of Pete's and Sam's ages is 30. Five years ago, Pete was 3 times as old as Sam. How old is Sam?
RUDIKE [14]
P-5=3s-15 because Pete is 20 and Sam is 10. 20-5= 15 and 3(10)-15 also equals 15. The answer is C.
4 0
3 years ago
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CAN SOMEONE HELP ME I DON'T GET IT PLEASEE
Marysya12 [62]

Answer:

a rise of 20 degrees

Step-by-step explanation:

since it started at -2 degrees, you have to add enough to get out of the negatives.

-2 + 2= 0, then 0+18 to get to the 18°

-2 + 20 = 18

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3 years ago
In your own words, describe slope.
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Answer:

it is a downward

discline

Step-by-step explanation:

4 0
3 years ago
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Please help me ASAP!!!<br> Solve for y.<br> −4.2y+2.1&gt;−2.52
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Answer:

hope it helps you

Step-by-step explanation:

https://mathsolver.microsoft.com/en/solve-problem/-4.2y%2B2.1%20%3E%20%20-2.52

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2 years ago
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