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Simplifying -1x2 + 5x = 9 Reorder the terms: 5x + -1x2 = 9 Solving 5x + -1x2 = 9 Solving for variable 'x'. Reorder the terms: -9 + 5x + -1x2 = 9 + -9 Combine like terms: 9 + -9 = 0 -9 + 5x + -1x2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. 9 + -5x + x2 = 0 Move the constant term to the right: Add '-9' to each side of the equation. 9 + -5x + -9 + x2 = 0 + -9 Reorder the terms: 9 + -9 + -5x + x2 = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -5x + x2 = 0 + -9 -5x + x2 = 0 + -9 Combine like terms: 0 + -9 = -9 -5x + x2 = -9 The x term is -5x. Take half its coefficient (-2.5). Square it (6.25) and add it to both sides. Add '6.25' to each side of the equation. -5x + 6.25 + x2 = -9 + 6.25 Reorder the terms: 6.25 + -5x + x2 = -9 + 6.25 Combine like terms: -9 + 6.25 = -2.75 6.25 + -5x + x2 = -2.75 Factor a perfect square on the left side: (x + -2.5)(x + -2.5) = -2.75 Can't calculate square root of the right side. The solution to this equation could not be determined.
| 9.99+1.25*1= | | 2n+5n+2=0 | | 9.99+1.25*1=23.74 | | 7+10x=102 | | 7-12y+6y+2(3y+1)=8 | | x^2+12y-160=0 | | (4t+16)+(5t-21)=330 | | 14x-62=12x | | x^3-12x^2-20x=0 | | 8x^2+7X-100=0 | | 7+6x=4x+19 | | (4t+16)+(5t-21)=340 | | 45x/75x | | (4t+16)+(5t-21)=380 | | 16=k-12 | | P+62=100 | | -9w+15=-3(3w-5) | | (4t+16)+(5t-21)=300 | | 1000=.0089t+1.1149t+78.4491 | | (4t+16)+(5t-21)=280 | | 5/3+2/3x=13/6+3/2x+1/2 | | 9m+4+2n= | | (4t+16)+(5t-21)=140 | | -2.9c=20.3 | | 4/5+1/4t=3/5 | | 6.25/2.5 | | 4+6x-2x^3=0 | | 10x=57 | | (-3+2+1)r-2= | | N-32=15 | | 500=.0089t+1.1149t+78.4491 | | 9.99+1.25x=23.74 |