For this case, we have the following equation (according to the comments):

First, we factor the quadratic expression in the denominator:

Then, we multiply both sides of the equation by (a-2) (a + 2):

Later, canceling similar terms we have:

We do distributive property on the left side of the equation:

By grouping variables and constant terms we have:

Rewriting we have:

Finally, by clearing "a" we have:

Note: the value of a is a extraneous solution because it makes the denominator of the original equation equal to zero.
Answer:
the student correct, but the value of a= -2 is an extraneous solution
Answer:
the area of triangle ABC = 9
Step-by-step explanation:
Check the photo below for the details.
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The answer is 43.01, because it is a 5-sided shape like a pentagon. Thus using the formula of to find the area of a pentagon, you will find the area of the shape.
Answer:
Step-by-step explanation:
4x + 3y = -12 -----------------(I)
2x - 3y = 30 ----------------(II)
Add the equations. So, y will be eliminated and we can find the value of x
4x + 3y = -12
<u>2x - 3y = 30 </u>
6x = 18
x = 18/6
x = 3
Plug in the value of x in equation (I)
4*3 + 3y = -12
12 + 3y = -12
3y = -12 - 12
3y = -24
y = -24/3
y = -8
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