\(-4(6p+5q)=-24p-20q\)

\(-7+(-4a-3)=-7-4a-3=-4a-10\)

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

\(9(-3a-2)=-27a-18\)

\(2(9x-7)-4(8x-6)=18x-14-32x+24=-14x+10\)

\(-9a(-3a+4)=27a^2-36a\)

\((3p+7)+(-8p-6)=3p+7-8p-6=-5p+1\)

\((5x-3)-(-2x-7)=5x-3+2x+7=7x+4\)

\(-5(9a-7b-2)=-45a+35b+10\)

\((3a-4)(-2b+9)=-6ab+27a+8b-36\)

\((3x-7)(-9x-4)=-27x^2-12x+63x+28=-27x^2+51x+28\)

\((p-8)(p+9)=p^2+9p-8p-72=p^2+p-72\)

\((x+5)^2=x^2+10x+25\)

\((6p+7)^2=36p^2+84p+49\)

\((-4a-2b)^2=16a^2+16ab+4b^2\)

\((x+4)(x+2)(x+7)=(x+4)(x^2+9x+14)=x^3+9x^2+14x+4x^2+36x+56=x^3+13x^2+50x+56\)

\(a(a-2)(a+5)=a(a^2+3a-10)=a^3+3a^2-10a\)

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

\((7p+8)(7p-8)=49p^2-64\)

\((a-7)(a+7)=a^2-49\)