Using the distributive property, remove the parentheses 10c^4(9-8c^2) also simplify

Rewrite the polynomial -9x5 + 36x4 + 189x3 in factored form.

Round to the nearest ten thousandth.i dont get this

Plz 20 points polynomials 1: subtract and simplify (–y^2 – 4y – 8) – (–4y^2 – 6y + 3) 2: multiply and simplify 2x^2 y^3 z^2 · 4xy^4 x^2 3: multiply and simplify (x – 4) (x2 – 5x – 6)