What is x squared minus four x minus two equals zero

The lengths of two sides of a right triangle are given. find the length of the third side. round to the nearest tenth if necessary. a) y = 12/5x + 39/5 b) y = 5/12x + 5/39 c) y = 12/5x - 39/5 d) y = 5/12x - 5/39

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

Interest begins accruing the date of the transaction except for auto loans mortgages credit card cash advances credit card purchases