\(3(4p-9q)=12p-27q\)

\(-3(-9a+4)=27a-12\)

\(-5(-7x-8y+2)=35x+40y-10\)

\(-3(-6x-5)+4(-7x+2)=18x+15-28x+8=-10x+23\)

\(-8a(-2a+5)=16a^2-40a\)

\(9+(5a-6)=9+5a-6=5a+3\)

\(7-(-2a-4)=7+2a+4=2a+11\)

\((-8x-3)(2y+5)=-16xy-40x-6y-15\)

\((4x-6)(-9x+5)=-36x^2+20x+54x-30=-36x^2+74x-30\)

\((p-9)(p+7)=p^2+7p-9p-63=p^2-2p-63\)

\((-2a-9)+(7a-4)=-2a-9+7a-4=5a-13\)

\((-7p+2)-(-9p+4)=-7p+2+9p-4=2p-2\)

\((a+6)(a+3)(a+2)=(a+6)(a^2+5a+6)=a^3+5a^2+6a+6a^2+30a+36=a^3+11a^2+36a+36\)

\(p(p+5)(p+9)=p(p^2+14p+45)=p^3+14p^2+45p\)

\((a+3)^2=a^2+6a+9\)

\((-9x+5)^2=81x^2-90x+25\)

\((-5x-8y)^2=25x^2+80xy+64y^2\)

\((-8x-9y)(-8x+9y)=64x^2-81y^2\)

\((-2a+3)(-2a-3)=4a^2-9\)

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