\(-5(-3a+6b)=15a-30b\)

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

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

\(8(3x+6)=24x+48\)

\(-2(8a-6)+4(5a-9)=-16a+12+20a-36=4a-24\)

\(-6a(-9a+8)=54a^2-48a\)

\((-7a-4)+(8a-5)=-7a-4+8a-5=a-9\)

\((-2x+9)-(6x-3)=-2x+9+-6x+3=-8x+12\)

\(4(-9a+8b-6)=-36a+32b-24\)

\((-6x+3)(2y-9)=-12xy+54x+6y-27\)

\((7a+8)(9a-6)=63a^2-42a+72a-48=63a^2+30a-48\)

\((p-9)(p-3)=p^2-3p-9p+27=p^2-12p+27\)

\((x-7)^2=x^2-14x+49\)

\((-9a-4)^2=81a^2+72a+16\)

\((-7p+9q)^2=49p^2-126pq+81q^2\)

\((x+6)(x-3)(x-5)=(x+6)(x^2-8x+15)=x^3-8x^2+15x+6x^2-48x+90=x^3-2x^2-33x+90\)

\(x(x-5)(x+3)=x(x^2-2x-15)=x^3-2x^2-15x\)

\((-2a+6b)(-2a-6b)=4a^2-36b^2\)

\((-2a-9)(-2a+9)=4a^2-81\)

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