Tìm x, biết
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Bài 5. Tìm x, biết:
1. \((x + 2)^2 - x(x + 3) = 2\)
2. \((x + 2)(x - 2) - (x + 1)^2 = 7\)
3. \(6x - (2x + 1)(3x + 2) + 3 = 0\)
4. \((x + 3)(x + 1) - (x - 1)(2x + 1) = 0\)
5. \((x + 1)^2 + (x - 9)(x - 3) - (x - 7)^2 = 0\)
6. \((x - 2)(x + 3)(x + 2)(x - 3) + x^4 = 0\)
7. \((x + 2)(x - 3) - (x^2 - x + 1) = 23\)
Bài 5. Tìm x, biết:
1. \((x + 2)^2 - x(x + 3) = 2\)
2. \((x + 2)(x - 2) - (x + 1)^2 = 7\)
3. \(6x - (2x + 1)(3x + 2) + 3 = 0\)
4. \((x + 3)(x + 1) - (x - 1)(2x + 1) = 0\)
5. \((x + 1)^2 + (x - 9)(x - 3) - (x - 7)^2 = 0\)
6. \((x - 2)(x + 3)(x + 2)(x - 3) + x^4 = 0\)
7. \((x + 2)(x - 3) - (x^2 - x + 1) = 23\)