\(9(-4x+6y)=-36x+54y\)

\(-9+(7a-5)=-9+7a-5=7a-14\)

\(-7-(2x+9)=-7-2x-9=-2x-16\)

\(7(5a+2)=35a+14\)

\(-3(2p-5)+4(7p-8)=-6p+15+28p-32=22p-17\)

\(-7x(5x+8)=-35x^2-56x\)

\((-5a-6)+(4a+2)=-5a-6+4a+2=-a-4\)

\((-8x-4)-(-3x-7)=-8x-4+3x+7=-5x+3\)

\(6(5a-3b+8)=30a-18b+48\)

\((-7x+6)(5y-2)=-35xy+14x+30y-12\)

\((-9a-7)(-2a+8)=18a^2-72a+14a-56=18a^2-58a-56\)

\((x+3)(x+5)=x^2+5x+3x+15=x^2+8x+15\)

\((p-4)^2=p^2-8p+16\)

\((2x-6)^2=4x^2-24x+36\)

\((5a-6b)^2=25a^2-60ab+36b^2\)

\((x-3)(x-2)(x+9)=(x-3)(x^2+7x-18)=x^3+7x^2-18x-3x^2-21x+54=x^3+4x^2-39x+54\)

\(a(a-7)(a-6)=a(a^2-13a+42)=a^3-13a^2+42a\)

\((4x+8y)(4x-8y)=16x^2-64y^2\)

\((5p+6)(5p-6)=25p^2-36\)

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