The solutions for
is option 3. 
Step-by-step explanation:
Step 1:
First, we must bring the equation to the form of 
So
becomes 
The value of a is the coefficient of the
term, the value of b is the coefficient of x term and c is the coefficient of the constant term.
Comparing the above equation to
we get
and 
We have the formula 
Step 2:
By substituting the known values, we get


This is the third option.
A+b=13
a-b=7
add the two equations using system of equations
2a=20
a=10
10+b=13
b=3
Answer:
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