\(5(6x-8y)=30x-40y\)

\(9(5p-7)=45p-63\)

\(8(-6x-7y-3)=-48x-56y-24\)

\(3(6a+4)-2(-8a-9)=18a+12+16a+18=34a+30\)

\(-2a(-9a-3)=18a^2+6a\)

\(7+(8a+9)=7+8a+9=8a+16\)

\(8-(-4x+7)=8+4x-7=4x+1\)

\((-9a-6)(-7b+4)=63ab-36a+42b-24\)

\((8x+2)(6x-9)=48x^2-72x+12x-18=48x^2-60x-18\)

\((p+9)(p-5)=p^2-5p+9p-45=p^2+4p-45\)

\((8a+6)+(9a+7)=8a+6+9a+7=17a+13\)

\((7x-3)-(4x-6)=7x-3+-4x+6=3x+3\)

\((a-3)(a-9)(a+8)=(a-3)(a^2-a-72)=a^3-a^2-72a-3a^2+3a+216=a^3-4a^2-69a+216\)

\(a(a-3)(a+4)=a(a^2+a-12)=a^3+a^2-12a\)

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

\((7p-4)^2=49p^2-56p+16\)

\((5x+7y)^2=25x^2+70xy+49y^2\)

\((-5a+4b)(-5a-4b)=25a^2-16b^2\)

\((-5x-9)(-5x+9)=25x^2-81\)

\((x+8)(x-8)=x^2-64\)