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the answer to 2+3+9+9+0=23 that is the professional way sio HA!!!!

Q: What is 2 plus 3 plus 9 plus 9 plus 0?

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It is 0.

0=(9)2-(9-3)(root of 4)+3(2)

9 is.

10 + 9 + 8 + 7 + 6 + 5 + 4 + 3 + 2 + 1 + 0 = 55

10 + 9 + 8 + 7 + 6 + 5 + 4 + 3 + 2 + 1 + 0 = 55

20x^2 + 27x + 9 = 0 20x^2 + 15x +12x + 9 = 0 5x(4x + 3) + 3(4x + 3) = 0 (5x + 3)(4x + 3) = 0 So either (5x + 3) = 0 which yields x = -3/5 or (4x + 3) = 0 which yields x = -3/4

x2+6x+9 = x+3 x2+6x-x+9-3 = 0 x2+5x+6 = 0 Solve by factoring or with the help of the quadratic equation formula: (x+3)(x+2) = 0 Therefore: x = -3 or x = -2

x2 + 7x = -2X2+6 3x2 + 7x -6 = 0 (3x-2)(x+3) = 0 Either 3x-2=0 or x+3=0 Either x=2/3 or x=-3 Plug the numbers into the original equation to check. (2/3)2 + 7(2/3) = -2(2/3)2 +6 4/9 + 14/3 = -8/9 + 6 4/9 + 42/9 + 8/9 - 54/9 = 0 0=0 That one checks out. Let's try the second one. (-3)2 + 7(-3) = -2(-3)2 + 6 9 -21 = -18 + 6 9 -21 +18 -6 = 0 0=0 The second one checks out also; so both answers are good. Answer: x = 2/3 or x = -3

9

It is: -9

These numbers all add up to 81.

The solutions are: s = -3/2 and s = -3/2 they have equal roots