Question

Please Help? thanks in advance! show all work Factor completely,or state that the trinomial is prime. 2x^4+2x^3-40x^2

Factor the trinomial by grouping, or state that the trinomial is prime. 12x^2+25x+12

Factor the greatest common factor from the polynomial. Assume any variable exponents represent whole numbers. 24x^8y^9-36x^2y^6-24x^6y^3

Factor by grouping. Assume any variable exponents represent whole numbers. 4x^3-20x^2+7x-35

Answer 1

first one start with
\[2x^2(x^2+x-20)\] then factor the second part as
\[2x^2(x+5)(x-4)\]

Answer 2

second one is
\[(3 x+4) (4 x+3)\] but i never really got "factor by grouping"

Answer 3

thats why im so confused because it says factor by grouping OR state whether its prime.