Question

Scoateți factorii de sub radical,apoi calculati:
a)4√18+5√108-2√72
b)3√162-5√12-4√75+2√50
c)-4√216+3√96-√54+2√600

Answer 1

a)4√2*9+5√9*12-2√8*9=4*3√2+5*6√2-2*6√2=12√2+30√2-12√2=30√2
b)3√18*9-5√3*4-4√5*15+2√25*2=3*9√2-5*2√3-4*5√3+2*5√2=27√2-10√3-20√3+10√2=37√2-30√3
c)-4√8*27+3√8*12-√6*9+2√6*100=-24√6+12√6-3√6+20√6=53√6