Question

20-(x^2+x)(12-x-x^2)

Answer 1

Explanation:

20-(x^2+x)(12-x-x^2)

20-(x^2+x)(12-x-x^2)20-(x^2+x)(-x^2-x+12)

20-(x^2+x)(12-x-x^2)20-(x^2+x)(-x^2-x+12)20- {-x^4-x^3+12x^2-x^3-x^2+12x}

20-(x^2+x)(12-x-x^2)20-(x^2+x)(-x^2-x+12)20- {-x^4-x^3+12x^2-x^3-x^2+12x}20- {-x^4-2x^3+11x^2+12x}

Ans:-x^4+2x^3-11x^2-12x+20