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3 years ago

Can u guys please help a poor soul 1/root 5 - root 3

Mathematics

2 answers:

Stolb23 [73]3 years ago

3 0

Answer:

1/√5+√3= 1/√5+√3×√5-√3/√5-√3 = √5-√3/(√5)^2-(√3)^2 {(a+b)(a-b)= (a)^2-(b)^2} =√5-√3/5-3 =√5-√3/2 ans... Do you satisfied to my given answer

Step-by-step explanation:

NISA [10]3 years ago

3 0

hope it really helps......!!!!!!

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Factor completely.<br><br> x^6 − 27

Katarina [22]

Answer:

$(x^{2}-3)(x^{4}+3x^{2}+9)$

Step-by-step explanation:

we know that

A difference of cubes can be factored like this

$a^{3}-b^{3}=(a-b)(a^{2}+ab+b^{2})$

In this problem we have

$x^{6}-27$

we know that

$x^{6}=(x^{2})^{3}$

and

$27=(3)^{3}$

Let

$a=x^{2}$

$b=3$

substitute

$(x^{2})^{3}-(3)^{3}=(x^{2}-3)(x^{4}+3x^{2}+9)$

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3 years ago

What's 1.25 times 12

Juli2301 [7.4K]

The awnser is 15
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4 years ago

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PIT_PIT [208]

Step-by-step explanation:

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2 years ago

A quantity with an initial value of 670 decays continuously at a rate of 25% per hour.

AysviL [449]

Answer:

89.43

Step-by-step explanation:

a = 670 * (1 * .25)^7

a = 670 * (.75)^7

a = 89.43

4 0

3 years ago

What percent of 60 is 150?

nignag [31]

To work out what percent of 60 is 150 just do the following:

150 / 60 = 2.5
2.5 x 100 = 250

Therefore 150 is 250% of 60. Hope I helped!

5 0

4 years ago