$(2x-3)(x-5)=(x-3)^2$
已知: (2x - 3)(x - 5) = (x - 3)²
求解: 我们需要求解x的值。
解:
(2x - 3)(x - 5) = (x - 3)²
2x(x - 5) - 3(x - 5) = x² + 9 - 6x
2x² - 10x - 3x + 15 = x² + 9 - 6x
2x² - x² - 13x + 6x + 15 - 9 = 0
x² - 7x + 6 = 0
x² - 6x - x + 6 = 0
x(x - 6) - (x - 6) = 0
(x - 6)(x - 1) = 0
现在,
x - 6 = 0
x = 6
同样,
x - 1 = 0
x = 1
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