Sagot :
A=3x×x+3x×(-5)=3x^2-15x
E=-4×7-4×-u=-28+4u
B=3x×-4+3x×-x=-12x-3x^2
FE=2y×3y+2y×-5=6y^2-10y
C=3b+12
G=-10x-2
D=-w+w^2
H=-18a-15a^2
1=x^2-5x+x-5=x^2-4x-5
J=8x^2+24x-10x-30=8x^2+14x-30
K=10u+15u^2+2+3u=15u^2+13u+2
A=3x×x+3x×(-5)=3x^2-15x
E=-4×7-4×-u=-28+4u
B=3x×-4+3x×-x=-12x-3x^2
FE=2y×3y+2y×-5=6y^2-10y
C=3b+12
G=-10x-2
D=-w+w^2
H=-18a-15a^2
1=x^2-5x+x-5=x^2-4x-5
J=8x^2+24x-10x-30=8x^2+14x-30
K=10u+15u^2+2+3u=15u^2+13u+2