The answer to the problem of 12X plus 13 equals 9 is x equals -1/3.
No solution. Multiply second equation by 3 and get 12x + 6y = 0 but already stated 12x + 6y = 9...
(2x + 3)(2x + 3)
1 and 3
3x multiplied by (12x plus 9) is:3x(12x + 9)= (3x * 12x) + (3x * 9)= 36x2 + 27x
It is: 122-4*(9*-2) = 216
x8+9=81 -9 -9 x8 =72 /8 /8 x= 9
few errors in your title: 2 plus 4 = 6 6 plus 9 = 15 10 plus 25 = 35 18 + 81 = 99
4x2 - 12x + 9 = 5; whence, 2x - 3 = ±√5, and 2x = 3 ±√5. Therefore, x = ½ (3 ±√5).
2x + 3 = -92x = -12x = -6
9n+9=81 9n=72 n=8
108