1、(1)b2=2b ( )(2)含有x的等式就是方程。(3)yy2y ( )(4)x7是方程6x240的解。2.7x8.8 x6.41.3 x1.75.62.38.7 8.8x58.08 6x7359.3x17634 9.8x25857 x0.79.371x47x826 99(x1)693 4.8x6.9(1)d22d ( )(3)tt2t ( )(4)x7是方程3x120的解。3x9.1 x6.80.5 x18.93.59 4.4x38.72 6.4x6.950.76.5x19306 5.5x81249 x4.68.562x21x415 37(x3)148 4.6x9.9(1)x22t ( )
2、(2)含有y的式子就是方程。(3)6b66(b1) ( )(4)x9是方程9x972的解。4.1x9.7 x0.62.1 x18.51.96.3 7.8x12.48 8.7x465.64.9x9651 6.7x40429 x0.38.999x77x1408 64(x8)576 0.6x8.2(2)含有未知数x的算式就是方程。(3)mm2m ( )(4)x6是方程5x822的解。4.9x5.4 x48.2 x1.57.30.66.5 9.3x63.24 9.9x9.959.46.9x80334 7.3x33478 x2.29.687x80x1002 84(x8)1344 3x9.4(1)t2(2
3、)含有y的等式就是方程。(3)ss2s ( )(4)x6是方程8x246的解。3.4x8.2 x2.77.3 x1.89.83.26.9 6.7x18.09 5.2x2.943.94.5x8298 9.6x62610 x4.87.612x64x608 47(x1)235 2.2x5.3(1)a22y ( )(3)2t22(t1) ( )(4)x5是方程3x105的解。2.2x5.8 x9.38.7 x15.3x2.59.3 0.6x4.14 5.5x7.614.44.9x7176 8.3x99150 x3.96.237x58x285 14(x4)140 0.1x7.7(1)a2(2)含有未知数
4、的式子就是方程。(3)cc2c ( )(4)x6是方程9x252的解。2.9x8.9 x15.4 x1.97.5x4.87.9 9.1x12.74 7.8x937.86.8x17391 8.1x46521 x0.67.930x61x546 76(x8)1064 2.6x9.2(4)x5是方程8x436的解。4.4x9.9 x8.94.1 x4.99x1.28.9 3.7x31.45 8.3x6.834.78.6x96248 8.8x47305 x4.6726x8x136 86(x2)860 3.3x5.1(1)b22b ( )(4)x8是方程4x131的解。4x6 x2.77 x0.89.4x
5、1.99.1 1.3x1.3 7.9x8.638.85.8x53469 8.6x61541 x4.28.759x73x1188 45(x8)765 0.6x6.2(2)含有y的算式就是方程。(3)6n66(n1) ( )(4)x9是方程8x468的解。3.5x9.4 x8.95.3 x15.2x47.3 9.9x10.89 9.5x9678.8x27765 9.4x16454 x0.78.667x52x357 95(x7)1425 2x8.1(2)含有未知数y的算式就是方程。(4)x5是方程4x1010的解。3x8.9 x7.35.4 x0.594.47.5 5x43.5 4.8x6.936.
6、39.6x23361 9.3x68490 x0.18.42x67x345 24(x7)312 0.3x8.9(1)a2=2a ( )(3)bb2b ( )(4)x6是方程8x939的解。0.2x7.9 x5.61.7 x3.66.5x4.85.6 4.6x20.24 5x9214.7x11318 6x41139 x17.519x5x96 10(x7)130 0.2x9(1)b2(3)dd2d ( )(4)x9是方程9x972的解。1.1x9.3 x7.25.9 x4.39.1x1.57.3 2.4x16.08 8.9x7.663.66x13287 7.8x68322 x4.28.778x20x
7、294 69(x9)966 2.5x5.1(2)含有未知数x的等式就是方程。(3)7s77(s1) ( )(4)x6是方程6x1026的解。3.2x5.7 x78.8 x1.98.5x4.86.2 4.3x12.04 9.4x6.250.26.4x85491 8.8x79273 x4.67.761x4x390 13(x9)221 5x5.9(1)y2=2y ( )(3)mm2m ( )141的解。1.2x6.8 x76.7 x0.47.6x0.87.8 1.5x3.9 7.6x2.320.59x96174 8.9x70464 x0.56.953x82x810 82(x8)1230 1.2x9.2
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