Question

Explain, in complete sentences, how you would factor 2x^8 + 44x^4 + 242

i already got to this part 2(x^8+22x^4+121)



someome please explain to me what the next step is?

Answer 1

The way i would solve this question is use the method of substitution then solve it quadratically, then refer it back to its original state

Answer 2

so you need to let x^8=m^2, so x^4=m

Answer 3

can you facator u^2 + 22u +121 ?

with u= x^4

Answer 4

2(m^2 +22m + 121)=0

Answer 5

now 2(m+11)^2=0

Answer 6

so m=-11

Answer 7

therefore x^4=-11, and x^8=121

Answer 8

have you done complex numbers?