The value of X in the equation 3x 2-12x plus 9 is 1.25.
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3x multiplied by (12x plus 9) is:3x(12x + 9)= (3x * 12x) + (3x * 9)= 36x2 + 27x
4x3+12x2+3x+9
5x + 4 - 3x + 5 + 2x - 9 = 4x
3x - 3 = 2x + 6 3x = 2x + 9 x = 9
-2x^4+16 +2x^4+9-3x^5=-3x^5+25. There is no "answer" because there is no equation.