Question: Show that cos^4 A - sin^4 A = (1 - tan^2 A)/(1 + tan^2 A) ii.Solve the equation 2 ^ (2x + 1) - 3

Show that cos^4 A - sin^4 A = (1 - tan^2 A)/(1 + tan^2 A)

ii.Solve the equation 2 ^ (2x + 1) - 3 * 2 ^ (x + 1) + 4 = 0


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