Question 611884
={{{(x+6)(x^2+3x-4)}}}
={{{(x(x^2+3x-4)+6(x^2+3x-4))}}}
={{{(x^3+3x^2-4x+6x^2+18x-24))}}}
={{{(x^3+3x^2+6x^2-4x+18x-24))}}}
={{{(x^3+9x^2+14x-24))}}}