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Simplifying 2x2 + 9 = 4x Reorder the terms: 9 + 2x2 = 4x Solving 9 + 2x2 = 4x Solving for variable 'x'. Reorder the terms: 9 + -4x + 2x2 = 4x + -4x Combine like terms: 4x + -4x = 0 9 + -4x + 2x2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. 4.5 + -2x + x2 = 0 Move the constant term to the right: Add '-4.5' to each side of the equation. 4.5 + -2x + -4.5 + x2 = 0 + -4.5 Reorder the terms: 4.5 + -4.5 + -2x + x2 = 0 + -4.5 Combine like terms: 4.5 + -4.5 = 0.0 0.0 + -2x + x2 = 0 + -4.5 -2x + x2 = 0 + -4.5 Combine like terms: 0 + -4.5 = -4.5 -2x + x2 = -4.5 The x term is -2x. Take half its coefficient (-1). Square it (1) and add it to both sides. Add '1' to each side of the equation. -2x + 1 + x2 = -4.5 + 1 Reorder the terms: 1 + -2x + x2 = -4.5 + 1 Combine like terms: -4.5 + 1 = -3.5 1 + -2x + x2 = -3.5 Factor a perfect square on the left side: (x + -1)(x + -1) = -3.5 Can't calculate square root of the right side. The solution to this equation could not be determined.
| 1000/780 | | M^3+3m^2+3m=0 | | F(x+4)=9x+1 | | x*.30=14 | | x*30=14 | | 0.72/.8 | | 7x=7x+28 | | X=z-m | | 48f=4608 | | 14-2x+5=-2+9 | | 3xm=1 | | ln7x/x=0 | | 3/9=6/y | | tanx=0.1875 | | X=56-865X | | 12y+12-4y=-14-14 | | F(6)=9x-1 | | (4a/9x)/(2a^4x^2/3x) | | a=cg | | 30=-1/6n | | 27e=4941 | | 42n-5=173 | | -5(6+2w)+4(3w-9)= | | 198=-6y | | 27=4941 | | 42n-5=174 | | (-5x+6)+(8x+7)= | | 24/6x3= | | 596=5.991464547(1/x-0.5) | | 11+d=27 | | x=(-1/5)=3/5 | | 16d=2784 |