[外语类试卷]GRE(QUANTITATIVE)综合模拟试卷8及答案与解析.doc

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1、GRE( QUANTITATIVE)综合模拟试卷 8及答案与解析 0 Solve each of the following equations for x. (a)5x - 7 = 28 (b)12-5x=x + 30 (c)5(x + 2)=1 - 3x (d)(x + 6)(2x - 1)= 0 (e)x2 + 5x- 14 = 0 (f)x2-x- 1 =0 6 Solve each of the following systems of equations for x and y. (a) x+y = 24 x-y=l8 (b) 3x-y = -5 x + 2y = 3 (c) 15

2、x- 18 - 2y =-3x+y 10x + 7y + 20 = 4x + 2 9 Solve each of the following inequalities for x.(a)-3x7+x(b)25x+ 16 10-x(c)16+x8x- 12 GRE( QUANTITATIVE)综合模拟试卷 8答案与解析 1 【正确答案】 7 2 【正确答案】 -3 3 【正确答案】 4 【正确答案】 -6,1/2 5 【正确答案】 -7, 2 6 【正确答案】 7 【正确答案】 x= 21 y = 3 8 【正确答案】 x = -1 y = 2 9 【正确答案】 x=1/2 y = -3 10 【正确答案】 11 【正确答案】 12 【正确答案】 x 4

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