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Nuetrik [128]
3 years ago
10

What is the answer to 2x to the power of 2 +x +1=0

Mathematics
1 answer:
KonstantinChe [14]3 years ago
4 0

Answer:

x=-1

Step-by-step explanation:

x+1=0(squared).

x+1=0 (anything raise to the power 0 is 0

collect like terms =x=-1

therefore x=-1

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<u>Part</u><u> </u><u>(</u><u>a</u><u>)</u>

Using the quotient rule, the blank is 11/5.

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Using the product rule, the blank is 9.

<u>Part</u><u> </u><u>(</u><u>c</u><u>)</u>

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4 years ago
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dybincka [34]

Answer:

16/45

Step-by-step explanation:

Step 1:  When dividing fractions, use “KFC”.  It means Keep the first fraction, Flip the second one, and  

              Change it to multiplication

-4/20 ÷ -9/16    →    -4/20 ∙ 16/-9

Step 2:  Reduce any fractions if necessary, it makes multiplying them easier and you will have to reduce anyway at the end.  It’s easier arithmetic to reduce at this step.  The first fraction reduces because both the numerator and denominator are divisible by 4.  

-1/5  ∙   16/-9    

Step 3:  Multiply numerators and denominators together to get one fraction

(-16)/(-45)  

Step 4:  Cancel out the negatives, a negative divided by a negative is a positive.  Our final answer is

 

16/45  


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