Find tan a and tan b. write each answer as a fraction and as a decimal rounded into four places.

After being rearranged and simplified, which of the following equations could be solved using the quadratic formula? check all that apply. a. 9% + 3x2 = 14 + x-1 b. -x+ + 4x + 7 = -32-9 c. 5x + 4 = 3x4 - 2 d. 2x2 + x2 + x = 30

Solve each quadratic equation by factoring and using the zero product property. x^2 - 8x + 30 = 3x

Prove that 16^4-2^13-4^5 is divisible by 11.