Question

Calculati: vã rogg!
A) (3√7-1)^2+(3-√7)^2-(5-3√7)(2√7+3)-4(20-3√7)
B) (√2+3√3)^2+(3√2-√3)^2-(√5-2)(√5+2)

Answer 1

a) (3-r6)^2+9-6r7+7-(10r7+16-42-9r7)-80+12r7=9-6r6+6+9-6r7+7-10r7-15+42+9r7-80+12r7=-22-6r6-5r7 b) 2+6r6+27+18-6r6+3-(5-4)=2+27+18+3-1=49