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Chat with our AI personalities
As long as the equation is 9x3 + 27x2 - 90x = 0, the answer is : 27 + 27x2 - 90x = 0 9x3 = 27 27 + 54 - 90x = 0 27x2 = 54 81 - 90x = 0 27 + 54 = 81 81 = 90x add 90x to each side 9/10 = x divide each side by 90 x = .9
90x
15 = 8x2 - 14x; whence, 8x2 - 14x - 15 = (2x - 5)(4x + 3) = 0. Therefore, x = 5/2 or -3/4.
Special product and factoring
15 min.Let the time be x minutes.THEREFOREtheir combined rate = 1 pool per x minutes ortheir combined rate = 1/x pool per minute>>...Jim can fill a pool...in 30 minutes...>...Sue can do the same job in 45 minutes...>...Tony can do the same job in 1 ½ hours.,,