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18 | 2
9 | 3
3 | 3
1
Entonces, √18=√(2×3^3)=3√2
De 32:
32 | 2
16 | 2
8 | 2
4 | 2
2 | 2
1
√32=√2^5=2^2√2=4√2
Regresamos a la operación original:
2(√2+3√2+4√2)=2(8√2)=16√2
B).
De 45:
45 | 3
15 | 3
5 | 5
1
√45=√(3^2×5)=3√5
De 80:
80 | 2
40 | 2
20 | 2
10 | 2
5 | 5
1
√80=√(2^4×5)=2^2√5=4√5
Regresamos:
3√5+2√45-√80=3√5+2(3√5)-4√5=3√5+6√5-4√5=5√5