Cho tam giác ABC nhọn nội tiếp đường tròn (O). Hai đường cao BD và CE cắt nhau tại H a) chứng minh ADE = ABC
b) tia phân giác của BAC cắt đường tròn (O) tại K. Chứng minh AH//OD

step-by-step explanation: a reaction is first order. if the initial reactant concentration is 0.0200 m, and 25.0 days later the concentration is 6.25 x 10-4 m, then its half-life is:

there is no question content here, but you for the free points! : d

step-by-step explanation:

the answer is 128

the correct answer option is (2x-3)(2x+3).

step-by-step explanation:

we are given the following expression and we are to factorize it:

we are to find such factors that when multiplied they give a result of 36 (9 x 4 = 36) and when added they give a result of 0.

the two such factors of 36 are negative six and postive six.

factorizing the given expression to get:

therefore, the correct factorization of is (2x-3)(2x+3).