Sagot :
1. A=(2x+1)(x-5)
=2x+10x+5x
=17x
2. A= (2x=1)(x-5)
= 2x3+10x3+5x3
=6+30+15
=51
=2x+10x+5x
=17x
2. A= (2x=1)(x-5)
= 2x3+10x3+5x3
=6+30+15
=51
1. A=(2x+1)(x-5)
A=(2x*x)+(2x*(-5))+(1*x)+(1*(-5))
A=2x^2-10x+x-5
A=2x^2-9x-5
2. A=2*(-3)^2-9*(-3)-5
A=2*9+27-5
A=18+27-5=40
A=(2x*x)+(2x*(-5))+(1*x)+(1*(-5))
A=2x^2-10x+x-5
A=2x^2-9x-5
2. A=2*(-3)^2-9*(-3)-5
A=2*9+27-5
A=18+27-5=40