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Anastaziya [24]

3 years ago

6

Which of the following is an extraneous solution of square root -3x-2=x+2?

2 answers:

timofeeve [1]3 years ago

6 0

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..

Reika [66]3 years ago

6 0

Answer:

A. x=-6

Step-by-step explanation:

i got it right on edge

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3 years ago

Logx - logx-1^2=2log(x-1)

myrzilka [38]

Answer:

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Step-by-step explanation:

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Please see attached image for the graph and solution.

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4 years ago

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Lapatulllka [165]

Answer:

No Solution because The Line Is Undefined

Step-by-step explanation:

When graphed You Get An Undefined line meaning The Line Is Straight,Horizontal

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3 years ago

a culture started with 5,000 bacteria. after 5 hours, it grew to 6,500 bacteria. predict how many bacteria will be present after

Anastasy [175]

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Nikitich [7]

Answer:

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Step-by-step explanation:

1. 9 out of 15 = 9/15

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