simplify each of the following
( i)x²-3x + 5-1/2 ( 3x²-5x+7)
(ii) [5-3x+2y-(2x-y)] -3x -7y+9
(iii) [11/2x²y-9/4 xy²+1/4xy-1/14y² + x+1/15yx²+ 1/2xy]
(iv) {1/3y² -4/7+11} -[1/7y-3+ 2y²}
(v) -1/2a²b²c+1/3ab²c-1/4qbc² -1/5cb²a² - 1/8 ca²b
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sorry but your questions not under understand
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