√40=4√2*5=4√10
√32=√2*2*2*2*2=√2²*2²*2=2*2√2=4√2
√4=√2*2=√2²=√2
√8=√2*2*2=2*2√2=4√2
√15129=√3*3*41*41=3*41=123
√96=√ 2*2*2*2*2*3=√2²*2²*2*3=2*2√2*3=4√6
√18=√3*3*2=√3²*3=3√3
√50=√5*5*2=√5²*2=5√2
√100=√2*2*5*5=√2²*5²=2*5=10
√150=√2*5*5*3=√2*5²*3=5√2*3=5√6
√ = acest semn este radical (ai grija sa-l faci lung pana la semnul egal)
* =semnul înmultirii
