\(-8(-3p-4q)=24p+32q\)

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

\(-7-(8x+2)=-7-8x-2=-8x-9\)

\(-9(2x-3)=-18x+27\)

\(3(7a-5)+4(-8a+9)=21a-15-32a+36=-11a+21\)

\(-7x(3x+9)=-21x^2-63x\)

\((-7a+6)+(-9a+3)=-7a+6-9a+3=-16a+9\)

\((-3x-8)-(2x-7)=-3x-8+-2x+7=-5x-1\)

\(-4(6x-5y-7)=-24x+20y+28\)

\((-9x-8)(4y+6)=-36xy-54x-32y-48\)

\((3a+4)(-2a-5)=-6a^2-15a-8a-20=-6a^2-23a-20\)

\((p+3)(p+4)=p^2+4p+3p+12=p^2+7p+12\)

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

\((9p-2)^2=81p^2-36p+4\)

\((-5a-9b)^2=25a^2+90ab+81b^2\)

\((a+5)(a-7)(a+4)=(a+5)(a^2-3a-28)=a^3-3a^2-28a+5a^2-15a-140=a^3+2a^2-43a-140\)

\(a(a+4)(a-6)=a(a^2-2a-24)=a^3-2a^2-24a\)

\((4x+3y)(4x-3y)=16x^2-9y^2\)

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

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