x*(tan(x)^ two + one) + x*(x*(tan(x)^ two + one)*tan(x) + tan(x)^ two + one) + tan(x) = zero
x multiply by ( tangent of (x) squared plus 1) plus x multiply by (x multiply by ( tangent of (x) squared plus 1) multiply by tangent of (x) plus tangent of (x) squared plus 1) plus tangent of (x) equally 0
x multiply by ( tangent of (x) to the power of two plus one) plus x multiply by (x multiply by ( tangent of (x) to the power of two plus one) multiply by tangent of (x) plus tangent of (x) to the power of two plus one) plus tangent of (x) equally zero