用直接开平方解下列方程

学习 时间:2026-04-08 00:47:53 阅读:9650
用直接开平方解下列方程

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优雅的太阳

活力的火车

2026-04-08 00:47:53

① 36 - x ² = 036 = x ²x = ± 6x1 = 6,x2 = - 6② (x + 2)² - 16 = 0(x + 2)² = 16x + 2 = ± 4x = ± 4 - 2x1 = 2 ,x2 = - 6③ (1 - 2 x)² - 3 = 0(1 - 2 x)² = 31 - 2 x = ± √32 x = 1 ± √3x1 = 1 + √3 ,x2 = 1 - √3④ 49(x + 1)² = (x - 2)²两边开方得:7(x + 1)= x - 27 x + 7 = x - 2 6 x = - 9x = - 3 / 2

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  • 洁净的香烟
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    2026-04-08 00:47:53

    ① 36 - x ² = 036 = x ²x = ± 6x1 = 6,x2 = - 6② (x + 2)² - 16 = 0(x + 2)² = 16x + 2 = ± 4x = ± 4 - 2x1 = 2 ,x2 = - 6③ (1 - 2 x)² - 3 = 0(1 - 2 x)² = 31 - 2 x = ± √32 x = 1 ± √3x1 = 1 + √3 ,x2 = 1 - √3④ 49(x + 1)² = (x - 2)²两边开方得:7(x + 1)= x - 27 x + 7 = x - 2 6 x = - 9x = - 3 / 2

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