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Two problems of mathematics in grade one of junior high school~ The current price of a certain brand of laptop is x yuan, which is 10% lower than that of last year______ (answer with polynomial) Let a B C denote an integral, and A-B = 3x square - 2x + 1, B-C = 4-2x square, then a-C=_________
X divided by 90 percent
A-c = the square of A-B + B-C = 3x-4x + 5
RELATED INFORMATIONS
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