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zhuklara [117]
3 years ago
7

PLEASE HELP QUICK!! I NEED IT ASAP 3.

Mathematics
2 answers:
wariber [46]3 years ago
3 0
C ! It’s the quadratic formula hope this helps
mariarad [96]3 years ago
3 0
C I hope it helps yeah c should be righty
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Help me with this one
Artist 52 [7]

9514 1404 393

Answer:

  "complete the square" to put in vertex form

Step-by-step explanation:

It may be helpful to consider the square of a binomial:

  (x +a)² = x² +2ax +a²

The expression x² +x +1 is in the standard form of the expression on the right above. Comparing the coefficients of x, we see ...

  2a = 1

  a = 1/2

That means we can write ...

  (x +1/2)² = x² +x +1/4

But we need x² +x +1, so we need to add 3/4 to the binomial square in order to make the expressions equal:

  x^2+x+1\\\\=(x^2+x+\frac{1}{4})+\frac{3}{4}\\\\=(x+\frac{1}{2})^2+\frac{3}{4}

_____

Another way to consider this is ...

  x² +bx +c

  = x² +2(b/2)x +(b/2)² +c -(b/2)² . . . . . . rewrite bx, add and subtract (b/2)²*

  = (x +b/2)² +(c -(b/2)²)

for b=1, c=1, this becomes ...

  x² +x +1 = (x +1/2)² +(1 -(1/2)²)

  = (x +1/2)² +3/4

_____

* This process, "rewrite bx, add and subtract (b/2)²," is called "completing the square"—especially when written as (x-h)² +k, a parabola with vertex (h, k).

5 0
3 years ago
What is a factor of 144-49x^2
Alenkinab [10]
(12+7x)(12-7x)
Because the square root of 144 is 12 and for 49 is 7 
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3 years ago
What is the relationship between the numerator and the denominator in a fraction?
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Don't really but I know that Google would help
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Patricia has a bank balance of −$54. If she deposits $100, what is her new balance?
Nadya [2.5K]

Answer:

Her new balance would be $46 all you have to do is take -54 and add 100 to it

Step-by-step explanation:

8 0
3 years ago
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What value does the 5 have in 893.75
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5/100
Hope this helps :)
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3 years ago
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