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lidiya [134]
3 years ago
10

Please help! i dont really understand.

Mathematics
2 answers:
Alik [6]3 years ago
6 0

Answer:

sorry I don't know

Step-by-step explanation:

zzz [600]3 years ago
4 0

Answer:

i cant see good in the pic

Step-by-step explanation:

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What reasoning and explanations can be used when solving radical equations and how do extraneous solutions arise from radical eq
Mkey [24]

Answer:

We know that, a 'radical equation' is an equation that contains radical expressions, which further are the expressions containing radicals ( square roots and other roots of numbers ).

In order to solve radical equations, we use the rules of exponents and basic algebraic properties.

The common reasoning to use while solving a radical equation is:

1. Isolate the radical expression.

2. Square both sides of the equation to remove radical.

3. After removing the radical, solve the equation to find the unkown variable

4. Check the answer for the errors occurred by removing the radicals.

For e.g. \sqrt{x}-3=5

i.e. \sqrt{x}-3+3=5+3 ( Adding 3 on both sides )

i.e. \sqrt{x}=8

i.e. (\sqrt{x})^{2} =8^{2}

i.e. x=64.

So, the solution the the radical equation \sqrt{x}-3=5 is x = 64.

Further, we know that an 'extraneous solution' is that root of the radical equation which is not a root of the original equation and is excluded from the domain.

for e.g. Take \sqrt{x+4} =x-2

i.e. (\sqrt{x+4})^{2} =(x-2)^2

i.e. x+4=x^2+4-4x

i.e. 0=x^2-5x

i.e. 0=x(x-5)

i.e. x = 0 and x = 5.

Substituting x = 0 in \sqrt{x+4} =x-2, gives \sqrt{0+4} =0-2 i.e. \sqrt{4} =-2 i.e. 2=-2, which is not possible.

So, x = 0 is a solution that does not satisfy the equation.

Hence, x = 0 is an extraneous solution.

7 0
3 years ago
A number, n, is added to 15 less than 3 times itself. The result is 101. Which equation can be used to find the value
Georgia [21]
I believe it’s the last one, but I could be wrong.. The n three times= 3n+15 (less than itself)-n ??
7 0
3 years ago
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Which is an example of the associative property?
Mrac [35]
I believe that the answer is C.
5 0
3 years ago
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Mr. Mosallam invested $14,000 in equipment to print yearbooks for Fordson High School. Each yearbook costs $7 to print and sells
earnstyle [38]
He needs to sell 500 year books to break even
5 0
3 years ago
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The distance between X and Y is 6 1/2 units. Which number could represent the point Y?
tiny-mole [99]

Answer:

\huge\boxed{\sf 3.5}

Step-by-step explanation:

Distance = \sf 6 \frac{1}{2} \ units = 6.5 \ units

Here X is -3

So,

Point Y = -3 + 6.5 = 3.5

\rule[225]{225}{2}

Hope this helped!

<h3>~AH1807</h3>
6 0
2 years ago
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