Question

What’s the polynomial in standard form

Answer 1

Use distributive property:

$(x^2-3)(x^2+3x-1)\\\\=(x^2)(x^2)+(x^2)(3x)+(x^2)(-1)+(-3)(x^2)+(-3)(3x)+(-3)(-1)\\\\=x^4+3x^3-x^2-3x^2-9x+3\\\\=\boxed{x^4+3x^3-4x^2-9x+3}$