Răspuns:
15/radical 75 +18/Radical 108+33/Radical 363)*5radical 3 = 15*5*radical/5radical 5+18*5*radical3/6 radical3 +39*5 radical 5/11 radical 3 = 15+15+15=45
y= 2(11-9)(18-3)= 2*2*15 = 60
am foiosit formula (a-b)(a+b) = a*a-b*b
p/100*60=45 rezulta p= 100*45/60=10*45/6=90
Explicație pas cu pas:
