Sagot :
(V2+3)(5V2-1)
=5x2+15V2-V2-3
=7+14V2
(2V5+3)²
=4x5+9+12V5
=29+12V5
(1-3V2)²
=1+9x2-6V2
=19-6V2
(1-V2)(1+V3)(2V2)
=(1-V2+V3-V6)(2V2)
=2V2-4-2V6-2V12
=-4+2V2-2V6-4V3
=5x2+15V2-V2-3
=7+14V2
(2V5+3)²
=4x5+9+12V5
=29+12V5
(1-3V2)²
=1+9x2-6V2
=19-6V2
(1-V2)(1+V3)(2V2)
=(1-V2+V3-V6)(2V2)
=2V2-4-2V6-2V12
=-4+2V2-2V6-4V3
(V2+3)(5V2-1) = 10+15V2-V2-3 = 7+14V2
(2V5+3)² = 20+12V5+9 = 29+12V5
(1-3V2)² =1-6V2+18 = 19-6V2
(1-V2)(1+V3)(2V2) = (1+V3-V2-V6)(2V2) = 2V2+2V6-4-2V12
=2V2+2V6-4V3-4
(2V5+3)² = 20+12V5+9 = 29+12V5
(1-3V2)² =1-6V2+18 = 19-6V2
(1-V2)(1+V3)(2V2) = (1+V3-V2-V6)(2V2) = 2V2+2V6-4-2V12
=2V2+2V6-4V3-4