s'il vous plaît calculé

bonsoir,

tu as des identités remarquables donc

(V6-V3)² = 6 -2V18+3= -2V9*2 +9 =-6V2+9

(V6+V3)² =6 +2V18+3 = 6V2+9

(4V2+5V3)² = 32+40V6+75=40V+107

(2V3-3V5)² =12 -12V15+45= -12V15+57

(3V3+5V2)² = 27 +30V6+50 = 30V6+77

(2V3-3V7)² = 12 -12V21+63 = -12V21+75

(5V2+2V5)² = 50 +20V10+20 = 20V10+70

(V5-V7)(V5+V7) = 5-7 = -2

(3V2-2V3)(3V2+2V3) = 18 -12 = 6