four *x^ two *(four *x^ four - three)*exp(-x^ four) = zero
4 multiply by x squared multiply by (4 multiply by x to the power of 4 minus 3) multiply by exponent of ( minus x to the power of 4) equally 0
four multiply by x to the power of two multiply by (four multiply by x to the power of four minus three) multiply by exponent of ( minus x to the power of four) equally zero
4*x2*(4*x4 - 3)*exp(-x4) = 0
4*x2*4*x4 - 3*exp-x4 = 0
4*x²*(4*x⁴ - 3)*exp(-x⁴) = 0
4*x to the power of 2*(4*x to the power of 4 - 3)*exp(-x to the power of 4) = 0