\(2(-8x-5y)=-16x-10y\)

\(6(7a-2)=42a-12\)

\(7(-6x+8y+9)=-42x+56y+63\)

\(2(5p-9)-3(-8p-4)=10p-18+24p+12=34p-6\)

\(-9a(-8a-7)=72a^2+63a\)

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

\(-3-(2p+5)=-3-2p-5=-2p-8\)

\((7a+3)(-4b-8)=-28ab-56a-12b-24\)

\((5x+2)(-9x+4)=-45x^2+20x-18x+8=-45x^2+2x+8\)

\((x-2)(x-8)=x^2-8x-2x+16=x^2-10x+16\)

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

\((-3x+4)-(9x+7)=-3x+4+-9x-7=-12x-3\)

\((a-8)(a-9)(a-6)=(a-8)(a^2-15a+54)=a^3-15a^2+54a-8a^2+120a-432=a^3-23a^2+174a-432\)

\(a(a-2)(a+4)=a(a^2+2a-8)=a^3+2a^2-8a\)

\((x+9)^2=x^2+18x+81\)

\((-2p-8)^2=4p^2+32p+64\)

\((-4x+5y)^2=16x^2-40xy+25y^2\)

\((9p-6q)(9p+6q)=81p^2-36q^2\)

\((8a-2)(8a+2)=64a^2-4\)

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