| 4x*(2x+2)= | 8x^2+8x |
| 5a(2a-3b+1)= | 10a^2-15ab+5a |
| 7x(3x-2y-x)= | 21x^2-14xy-7x^2=14x^2-14xy |
| 5a-3(2a-3)= | 5a-6a+9=-1a+9=-a+9 |
| 49x-(-20x(2x-2))= | 49x-(-40x^2+40x)=49x+40x^2-40x=40x^2+9x |
| 78a-(5a(2a+7))= | 78a-(10a^2+35a)=78a-10a^2-35a=-10a^2+43a |
| (2x-13y)(1x+4y)= | 2x^2+8xy-13xy-52y^2=2x^2-5xy-52y^2 |
| 95a-(10b(15c-25))= | 95a-(150bc-250b)=95a-150bc+250b |
| 100x+(15x(90x+15))= | 100x+(1350x^2+225x)=100x+1350x^2+225x=1350x^2+325x |
| (x+3)(x+8)= | x^2+8x+3x+24=x^2+11x+24 |
| 30x-5(6x-5y+4)= | 30x-30x+25y-20=25y-20 |
| 10a-(5a(4a-3))= | 10a-(20a^2-15a)=10a-20a^2+15a=-20a^2+25a |
| -(8x)(5x-10)= | -(40x^2-80x)=-40x^2+80x |
| 5x-x(4x-x(3x-x(2)))= | 5x-x(4x-x(3x-2x))=5x-x(4x-3x^2+2x^2)=5x-4x^2+3x^3-2x^3=1x^3-4x^2+5x |
| -1(x-3(x-3))= | -1(x-3x+9)=-x+3x-9=2x-9 |