Question

solve (x^2)^2 + 7x^2-144=0

Answer 1

Try letting = x^2 and solve

y^2 + 7y -144 =0

Standard quadratic equation for y

Answer 2

nah thats not the answer

Answer 3

actually i was solving some engineering mathematics "complex cojugate numbers" and arrived at this.but cant remember how to solve for x

Answer 4

the answer should be x=+/- 3
or x= +/- 4