Solve for A, B, a, b
b=9
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a=\left(1+2\right)^{2}
Consider the third equation. Insert the known values of variables into the equation.
a=3^{2}
Add 1 and 2 to get 3.
a=9
Calculate 3 to the power of 2 and get 9.
b=9
Consider the fourth equation. Insert the known values of variables into the equation.
A=1 B=2 a=9 b=9
The system is now solved.
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