Question

x^4+7x^2=18

Answer 1

real or imaginary solutions by factoring

Answer 2

the both

Answer 3

there are 4 factors

Answer 4

\[\pm \sqrt{2}\]

Answer 5

and
\[\pm3i\]

Answer 6

can i see some work please

Answer 7

x^4 +7x^2 = 18
let x^2 = a
a^2 + 7a -18 =0
(a+9)(a -2)=0
a=-9, a =2
remember a = x^2
so x^2 = -9 ; x^2 = 2
solve for x

Answer 8

thanks

Answer 9

oh you are welcome