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Sladkaya [172]
2 years ago
6

Express x^2-5x+8 in the form (x-a)^2+b where a and b are integers

Mathematics
1 answer:
zimovet [89]2 years ago
7 0

Answer:

f(x)=(x-\frac{5}{2})^2+\frac{7}{4}

Step-by-step explanation:

<u>Complete the square</u>

<u />f(x)=x^2-5x+8\\\\f(x)-1.75=x^2-5x+8-1.75\\\\f(x)-1.75=x^2-5x+6.25\\\\f(x)-1.75=(x-2.5)^2\\\\f(x)=(x-2.5)^2+1.75\\\\f(x)=(x-\frac{5}{2})^2+\frac{7}{4}

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Step-by-step explanation:

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3 years ago
|x| + 4 &gt; 7 plz help and hurry
Talja [164]

Answer:

The solution is (-\infty,-3)\cup(3,\infty).

Step-by-step explanation:

Given:

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4 0
3 years ago
What should be done to both sides of the equation in order to solve y - 4.5 = 12.2?
maw [93]
Y - 4.5 = 12.2

your solving for y which means your trying to get rid of 4.5 so that y can equal something. The opposite of -4.5 would be +4.5, so you would add 4.5 to both sides to get 

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So your answer would be 

A. Add 4.5

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6 0
3 years ago
What is the value of x in the equation 3x + 2 = 5x - 8?
katrin2010 [14]

Answer:5

Step-by-step explanation:

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5 0
2 years ago
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Natali [406]

Answer:

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Step-by-step explanation:

Yes, that's correct:

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Was there more to this question?

3 0
3 years ago
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