Question

Calculati 3 radical din 50 minus radical din 180 minus radical din 18 plus radical din 45

Answer 1

3√50-√180-√18+√45=3*5√2-6√5-3√2+3√5=12√2-3√5=3(4√2-√5)
√50=√5*5*2=5√2
√180=√6*6*5=6√5
√18=√3*3*2=3√2
√45=√3*3*5=3√5