(-sin(x) - eight *cos(x)/x + twenty *sin(x)/x^ two)/x^ four = zero
( minus sinus of (x) minus 8 multiply by co sinus of e of (x) divide by x plus 20 multiply by sinus of (x) divide by x squared ) divide by x to the power of 4 equally 0
( minus sinus of (x) minus eight multiply by co sinus of e of (x) divide by x plus twenty multiply by sinus of (x) divide by x to the power of two) divide by x to the power of four equally zero
(-sin(x) - 8*cos(x)/x + 20*sin(x)/x2)/x4 = 0
-sinx - 8*cosx/x + 20*sinx/x2/x4 = 0
(-sin(x) - 8*cos(x)/x + 20*sin(x)/x²)/x⁴ = 0
(-sin(x) - 8*cos(x)/x + 20*sin(x)/x to the power of 2)/x to the power of 4 = 0
(-sin(x) - 8cos(x)/x + 20sin(x)/x^2)/x^4 = 0
(-sin(x) - 8cos(x)/x + 20sin(x)/x2)/x4 = 0
-sinx - 8cosx/x + 20sinx/x2/x4 = 0
-sinx - 8cosx/x + 20sinx/x^2/x^4 = 0
(-sin(x) - 8*cos(x) divide by x + 20*sin(x) divide by x^2) divide by x^4 = 0