Question

factor each equation : x^4-x^2-30=f(x)

Answer 1

let X=x^2
factorize then resubstitute

Answer 2

i forget how to factor though !

Answer 3

you look for 2 numbers whose product is -30 and whose sum is -1?

Answer 4

can you draw the first couple of steps and then i can solve the other parts...