Find the product -2xl-4x² - 2x² + 5x)

Find the solution of each of the following.

If it 8 inch candle burns at 7/10 inch per hour and a 6 inch candle burns at 1/5 inch per hour after how many hours would both candles be the same height

Given: pb tangent pv,pu secants if m = 80° and m = 30°, then m 3 = 55 40 25