Solve for x_2
x_{2}=759
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841+x_{2}=40^{2}
Calculate 29 to the power of 2 and get 841.
841+x_{2}=1600
Calculate 40 to the power of 2 and get 1600.
x_{2}=1600-841
Subtract 841 from both sides.
x_{2}=759
Subtract 841 from 1600 to get 759.
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