( 1 \sqrt { 15 } ) ^ { 2 } - \sqrt { 1,21 }
Evaluate
13,9
Factor
\frac{139}{2 \cdot 5} = 13\frac{9}{10} = 13.9
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1^{2}\left(\sqrt{15}\right)^{2}-\sqrt{1,21}
Expand \left(1\sqrt{15}\right)^{2}.
1\left(\sqrt{15}\right)^{2}-\sqrt{1,21}
Calculate 1 to the power of 2 and get 1.
1\times 15-\sqrt{1,21}
The square of \sqrt{15} is 15.
15-\sqrt{1,21}
Multiply 1 and 15 to get 15.
15-1,1
Calculate the square root of 1,21 and get 1,1.
13,9
Subtract 1,1 from 15 to get 13,9.
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