Tìm x biết
----- Nội dung ảnh -----
Bài 7: Tìm x biết
1) x.(x + 3) - x² + 9 = 0
2) x.(x - 1) - x² + 2x = 5
3) x.(x + 3) - x² + 5x = 16
4) x.(x + 11) - x² + x = 12
5) x.(2x - 3) - 2x² - x = 8
6) x.(3x + 1) - 3x² + 2x = 9
7) x.(2x - 3) - 2.(3 - 2x) = 0
8) x.(2x - 5) - 2x.(x - 6) = 42
9) x.(5 - 2x) + 2x.(x - 1) = 15
10) 2x.(x - 5) - x.(3 + 2x) = 26
11) 5x.(1 - 2x) - 3.x.(x + 18) = 0
12) 3.x.(12x - 4) - 9x.(4x - 3) = 30
Bài 7: Tìm x biết
1) x.(x + 3) - x² + 9 = 0
2) x.(x - 1) - x² + 2x = 5
3) x.(x + 3) - x² + 5x = 16
4) x.(x + 11) - x² + x = 12
5) x.(2x - 3) - 2x² - x = 8
6) x.(3x + 1) - 3x² + 2x = 9
7) x.(2x - 3) - 2.(3 - 2x) = 0
8) x.(2x - 5) - 2x.(x - 6) = 42
9) x.(5 - 2x) + 2x.(x - 1) = 15
10) 2x.(x - 5) - x.(3 + 2x) = 26
11) 5x.(1 - 2x) - 3.x.(x + 18) = 0
12) 3.x.(12x - 4) - 9x.(4x - 3) = 30