\(5(-9p-7q)=-45p-35q\)

\(8+(-4x+9)=8-4x+9=-4x+17\)

\(6-(-9a-2)=6+9a+2=9a+8\)

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

\(2(5x-7)-3(-8x-6)=10x-14+24x+18=34x+4\)

\(3x(-6x-5)=-18x^2-15x\)

\((-6p-3)+(-9p+4)=-6p-3-9p+4=-15p+1\)

\((9x-6)-(7x-8)=9x-6+-7x+8=2x+2\)

\(6(-4x-5y-2)=-24x-30y-12\)

\((7p-8)(5q-2)=35pq-14p-40q+16\)

\((-8a+4)(-6a-5)=48a^2+40a-24a-20=48a^2+16a-20\)

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

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

\((-6x+9)^2=36x^2-108x+81\)

\((9a-3b)^2=81a^2-54ab+9b^2\)

\((p+6)(p+3)(p-2)=(p+6)(p^2+p-6)=p^3+p^2-6p+6p^2+6p-36=p^3+7p^2-36\)

\(a(a+3)(a+7)=a(a^2+10a+21)=a^3+10a^2+21a\)

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

\((6x-2)(6x+2)=36x^2-4\)

\((x+2)(x-2)=x^2-4\)