\(-5(-4x+7y)=20x-35y\)

\(-9(8p+6)=-72p-54\)

\(6(-5x+7y+4)=-30x+42y+24\)

\(2(9a-6)+3(8a+5)=18a-12+24a+15=42a+3\)

\(9a(-5a-4)=-45a^2-36a\)

\(2+(5p+9)=2+5p+9=5p+11\)

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

\((2a+3)(-7b+4)=-14ab+8a-21b+12\)

\((3x+4)(-2x-9)=-6x^2-27x-8x-36=-6x^2-35x-36\)

\((a-4)(a+9)=a^2+9a-4a-36=a^2+5a-36\)

\((-8x+6)+(7x+3)=-8x+6+7x+3=-x+9\)

\((-9x+4)-(7x+8)=-9x+4+-7x-8=-16x-4\)

\((p+6)(p-9)(p-4)=(p+6)(p^2-13p+36)=p^3-13p^2+36p+6p^2-78p+216=p^3-7p^2-42p+216\)

\(x(x+8)(x+5)=x(x^2+13x+40)=x^3+13x^2+40x\)

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

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

\((-4a-3b)^2=16a^2+24ab+9b^2\)

\((3a-7b)(3a+7b)=9a^2-49b^2\)

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

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