\(2(-8x-6y)=-16x-12y\)

\(-3+(2a-4)=-3+2a-4=2a-7\)

\(-7-(-8a-6)=-7+8a+6=8a-1\)

\(7(5p+9)=35p+63\)

\(2(3x+6)+4(-8x-7)=6x+12-32x-28=-26x-16\)

\(3p(-9p-2)=-27p^2-6p\)

\((5x-6)+(-3x+8)=5x-6-3x+8=2x+2\)

\((-4a-6)-(-3a+9)=-4a-6+3a-9=-a-15\)

\(2(-4a-5b-6)=-8a-10b-12\)

\((4x+6)(-9y-3)=-36xy-12x-54y-18\)

\((8p-7)(-9p+5)=-72p^2+40p+63p-35=-72p^2+103p-35\)

\((x+9)(x-3)=x^2-3x+9x-27=x^2+6x-27\)

\((a-4)^2=a^2-8a+16\)

\((3a+8)^2=9a^2+48a+64\)

\((-7x-9y)^2=49x^2+126xy+81y^2\)

\((x+2)(x+7)(x-4)=(x+2)(x^2+3x-28)=x^3+3x^2-28x+2x^2+6x-56=x^3+5x^2-22x-56\)

\(x(x-9)(x-6)=x(x^2-15x+54)=x^3-15x^2+54x\)

\((-8a-3b)(-8a+3b)=64a^2-9b^2\)

\((9p-3)(9p+3)=81p^2-9\)

\((a+8)(a-8)=a^2-64\)