MATHEMATICS HIGH SCHOOL

Which of the following is an extraneous solution of square root -3x-2=x+2?a) x = –6
b) x = –1
c) x = 1
d) x = 6

Answers

Answer 1
Answer: Hello,

Answer A (x=-6 is an extraneous solution)

√(-3x-2)=x+2
==>-3x-2>=0
==>x<= -2/3

So -3x-2=(x+2)²
==>-3x-2=x²+4x+4
==>x²+7x+6=0
==> (x=-6) or (x=-1)

if x=-6 then
√(-3*(-6)-2)=√16=4
-6+2=-4
False 4≠-4

if x=-1
√(-3*(-1)-2)=√1=1
-1+2=1
ok..
Answer 2
Answer:

Answer:

A. x=-6

Step-by-step explanation:

i got it right on edge

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Answers

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Step-by-step explanation:

Answer:

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Step-by-step explanation:

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Answers

Answer:

30

Step-by-step explanation:

Square root of a number k will turn it into a number n such that n * n = k.

The square root of 100 is 10 because 10 * 10 = 100, and the square root of 400 because 20 * 20 = 400.

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Hope this helps!

Answer:

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Step-by-step explanation:

^V^

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Answers

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C) 1/7

Answers

Answer:

The answer would be A 1/15.

Step-by-step explanation:

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Hope this helps to explain it! :)

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Answers

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Step-by-step explanation:

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Answers

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