1. 2(×+4) 2. -3×(2×+3) 3. (2×+3) (4-2×) 4. (×+3) (×-3) 5. (×+2) (×-2) 6. (×-7) (×-7)

1. 2(x+4)=2x+8
2.-3x(2x+3)= -6x²-9x
3. (2x+3)(4-2x)=(2x.4)-(2x.2x)+(3.4)-(3.2x)
=8x-4x²+12-6x
=-4x²+2x+12
4.(x+3)(x-3)= x²-3x+3x-9
=x²-9
5.(x+2)(x-2)=x²+2x-2x-4
=x²-4
6.(x-7)(x-7)=x²-7x-7x+49
=x²-14x+49
semoga membantu