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3 years ago

Writing radicals as a rational exponent

Mathematics

1 answer:

Vladimir79 [104]3 years ago

8 0

Lets say you have $\sqrt[n]{x}$ . To write it using a rational exponent, you would write $x^{\frac{1}{n}}$ .

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Last question. 50 points!

Shkiper50 [21]

w=-1.5

w=2

Answer:

Solution given:

$\sqrt{2w²-19w+31}+2=7-2w$

again

keep square root alone

$\sqrt{2w²-19w+31}=7-2w-2$

solve subtraction of 7-2

$\sqrt{2w²-19w+31}=5-2w$

Squaring on both side

$(\sqrt{2w²-19w+31})²=(5-2w)²$

2w²-19w+31=5²-2*5*2w+4w²

take terms one side

2w²-19w+31-25+20w-4w²=0

-2w²+w+6=0

2w²-w-6=0

doing middle term factorisation

2w²-(4-3)w-6=0

2w²-4w+3w-6=0

take common from each two term

2w(w-2)+3(w-2)=0

(w-2)(2w+3)=0

either

w=2

W=-3/2=-1.5

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2 years ago

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8_murik_8 [283]

Answer:

Step-by-step explanation:

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2 years ago

245,600,000,000 in scientific notation

vekshin1

Answer:

2.456 x 10^11

Step-by-step explanation:

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