Tìm x biết
làm bài 13,14,15,16 thôi nha!
----- Nội dung ảnh -----
2) \(-\frac{2}{3} - 3x = -2\)
3) \(-\frac{2}{3} + 2 \left( x + \frac{1}{2} \right) = 1\)
4) \(2x - \frac{2}{3} + \frac{1}{2}x = -15\) \((x^2 + 4) \cdot (9x^2 - 1) = 0\)
7) \(\frac{3}{4} \left| x - \frac{3}{2} \right| = \frac{1}{6}\)
8) \(\frac{31}{36} \left( \frac{1}{3} - x \right)^2 = \frac{5}{6}\)
12) \((|x - 1| - 2) \left( -\frac{1}{2} x^2 - 2 \right) = 0\)
13) \((|x - 1|)(x^2 + 2) = 0\)
15) \((3x + 3)^2 + (4x^2 - 4)^4 = 0\)
16) \(x(x - 3) + 9 = x^2 + 5x\)
----- Nội dung ảnh -----
2) \(-\frac{2}{3} - 3x = -2\)
3) \(-\frac{2}{3} + 2 \left( x + \frac{1}{2} \right) = 1\)
4) \(2x - \frac{2}{3} + \frac{1}{2}x = -15\) \((x^2 + 4) \cdot (9x^2 - 1) = 0\)
7) \(\frac{3}{4} \left| x - \frac{3}{2} \right| = \frac{1}{6}\)
8) \(\frac{31}{36} \left( \frac{1}{3} - x \right)^2 = \frac{5}{6}\)
12) \((|x - 1| - 2) \left( -\frac{1}{2} x^2 - 2 \right) = 0\)
13) \((|x - 1|)(x^2 + 2) = 0\)
15) \((3x + 3)^2 + (4x^2 - 4)^4 = 0\)
16) \(x(x - 3) + 9 = x^2 + 5x\)