3 years ago

Please help!! What is the solution to 2x^2+x+2=0?

Mathematics

1 answer:

Aliun [14]3 years ago

8 0

Answer:

your 3rd option

Step-by-step explanation:

$\frac{-1+/-\sqrt{1-4(2)(2} )}{2(2)}$

${\frac{-1+/-\sqrt{1-16} }{4}}$

${\frac{-1+/-\sqrt{-15} }{4}}$

${\frac{-1+/-i\sqrt{15} }{4}}$

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3 years ago

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Solve the linear system of equations using the linear combination method.

yawa3891 [41]

Hello!

4x - 9y = 20
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You first need one of the variables have the same coefficient

We can do this by multiplying the second equation by 2

4x - 12y = 32

Subtract the equations to get rid of x

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3y = -12

Divide both sides by 3

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Put y into one of the original equations

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The answers are x = -4 and y = -4

Hope this helps!

6 0

3 years ago

Somebody please help and explain it.

s2008m [1.1K]

Explanation is in the file

tinyurl.com/wpazsebu

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3 years ago

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Fittoniya [83]

Answer:

Hope this is helpful for you