Is the expression a perfect square if so, factor the expression.

Mathematics

2 answers:

SIZIF [17.4K]3 years ago

8 0

The answer is a. below you will find the step by step solution on how to solve this problem.

stepan [7]3 years ago

5 0

I would say A.
I hope this helps!

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2x² - 5x+1 has roots alpha and beta. Find alpha⁴+beta⁴ without solving the equation.

shepuryov [24]

Answer:

Step-by-step explanation:

$\alpha+\beta=\dfrac{5}{2} \\\\\alpha*\beta=\dfrac{1}{2} \\\\\alpha^2+\beta^2=\dfrac{21}{4} \ (see\ previous\ post)\\\\(\alpha+\beta)^4=\dfrac{625}{16} \\\\=\alpha^4+\beta^4+4*\alpha^3*\beta+6*\alpha^2*\beta^2+4*\alpha*\beta^3\\\\=\alpha^4+\beta^4+4*(\alpha*\beta)(\alpha^2+\beta^2)+6*\alpha^2*\beta^2\\\\\alpha^4+\beta^4=(\alpha+\beta)^4-4*(\alpha*\beta)(\alpha^2+\beta^2)-6*\alpha^2*\beta^2\\\\= \dfrac{625}{16} -4*\dfrac{1}{2} *\dfrac{21}{4} -6*(\dfrac{1}{2})^2 \\\\$

$= \dfrac{625}{16}- \dfrac{168}{16}-\dfrac{24}{16}\\\\\\= \dfrac{433}{16}$

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3 years ago

#20. Choose the single logarithmic expression that is equivalent to the one shown.

Klio2033 [76]

My answer would be c. hope this helps.

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3 years ago

Polly is a server at a

Anna [14]

Answer:

They gave her a $6.12 tip

Step-by-step explanation:

You have to multiply the total ($34) by the Percent (18% = 0.18), and then you will have your final answer.

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2 years ago

What is the result of subtracting the second equation from the first?<br><br>−4x−2y=-2<br><br>x−2y=9

FrozenT [24]

The end result would be ( 11/5 , -15/5)

8 0

3 years ago

Can anybody help me with all this pls

julia-pushkina [17]

Example

6.

3/8+1/4+__=1

1/4 is the same like 2/8

3/8+2/8=5/8

5/8+__=1

1 is the same like 8/8

5/8+__=8/8

8/8-5/8=_

8/8-5/8=3/8

Blank field-> 3/8

4 0

3 years ago