forty-eight *(two *sin(four *x)^ two - cos(four *x)^ two)*cos(four *x) = zero
48 multiply by (2 multiply by sinus of (4 multiply by x) squared minus co sinus of e of (4 multiply by x) squared ) multiply by co sinus of e of (4 multiply by x) equally 0
forty minus eight multiply by (two multiply by sinus of (four multiply by x) to the power of two minus co sinus of e of (four multiply by x) to the power of two) multiply by co sinus of e of (four multiply by x) equally zero
48*(2*sin(4*x)2 - cos(4*x)2)*cos(4*x) = 0
48*2*sin4*x2 - cos4*x2*cos4*x = 0
48*(2*sin(4*x)² - cos(4*x)²)*cos(4*x) = 0
48*(2*sin(4*x) to the power of 2 - cos(4*x) to the power of 2)*cos(4*x) = 0