Find all the zeroes of polynomial 2x4 – 9x3 + 5x2 + 3x – 1 ,if two of its zeroes are 2 + √3 & 2 - √3

(a) calculate the molarity of a solution that contains 0.0345 mol nh4cl in 400 ml of solution. (b) how many moles of hno3 are present in 35.0 ml of a 2.20 m solution of nitric acid? (c) how many milliliters of 1.50 m koh solution are needed to supply 0.125 mil of koh ?

In a singing competition, there are 150 participants. at the end of each round, 40% of the participants are eliminated. how many participants are left after n rounds?

Which of the following is missing in the explicit formula for the compound interest geometric sequence below?