初一下学期代数试题内容摘要:
__________ 1满足不等式组 52xx的整数解是 ___________________ 1已知 x+y=5 , xy=3 , 则 x2+y2=________________________ 三、 选择题:( 5 3=15分) 下列记算正确的是 ( ) (A)(a3)=a10 (B)(a4)2247。 a4=a2 (C)(a3b)3247。 21a2b2=2a4b (D)(5a2b3) (2a)=10a3b3 化简 1(x2)2+(x+3)(x+4)应等于 ( ) (A)3x15 (B)x15 (C)5x7 (D)93x 如果 3a7xby+7与 4a24yb2x是同类项,则 x,y的值是 (。初一下学期代数试题
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