2022年中考数学计算训练
(1)计算: √0.04+cos245°−(−2)−1−|−12|;
(2)先化简,再求值: (x−yx2−2xy+y2−xx2−2xy)÷yx−2y,其中 x=3√2, y=√2.
来源:2017年四川省绵阳市中考数学试卷
(1)计算: √0.04+cos245°−(−2)−1−|−12|;
(2)先化简,再求值: (x−yx2−2xy+y2−xx2−2xy)÷yx−2y,其中 x=3√2, y=√2.
试题篮
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