Răspuns :
√27=3√3
√12=2√3
√75=5√3
=3√3+2√3-5√3=5√3-5√3=0
2√18=2x3√2=6√2
2√8=2x2√2=4√2
=4√2+6√2-13√2=10√2-13√2=-3√2
√12=2√3
√75=5√3
=3√3+2√3-5√3=5√3-5√3=0
2√18=2x3√2=6√2
2√8=2x2√2=4√2
=4√2+6√2-13√2=10√2-13√2=-3√2
√27+√12-√75=√9x3+√4x3-√25x3=3√3+2√3-5√3=0
2√8+2√18-13√2=2√4x2+2√9x2-13√2=2x2√2+2x3√2-13√2=4√2+6√2-13√2= - 3√2
2√8+2√18-13√2=2√4x2+2√9x2-13√2=2x2√2+2x3√2-13√2=4√2+6√2-13√2= - 3√2