Question

Does Anyone Know How To Do This?
Please help me

Answer 1

Answer:(0,4,3i,-3i)

Explanation:

x²(x²+9)-4x(x²+9)=0

(x²-4x)(x²+9)=0

x(x-4)=0

x₁=0

x₂=0+4=4

x₃=√-9=3i

x₄=√-9=-3i