If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying r2 + -4r + 7 = 0 Reorder the terms: 7 + -4r + r2 = 0 Solving 7 + -4r + r2 = 0 Solving for variable 'r'. Begin completing the square. Move the constant term to the right: Add '-7' to each side of the equation. 7 + -4r + -7 + r2 = 0 + -7 Reorder the terms: 7 + -7 + -4r + r2 = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -4r + r2 = 0 + -7 -4r + r2 = 0 + -7 Combine like terms: 0 + -7 = -7 -4r + r2 = -7 The r term is -4r. Take half its coefficient (-2). Square it (4) and add it to both sides. Add '4' to each side of the equation. -4r + 4 + r2 = -7 + 4 Reorder the terms: 4 + -4r + r2 = -7 + 4 Combine like terms: -7 + 4 = -3 4 + -4r + r2 = -3 Factor a perfect square on the left side: (r + -2)(r + -2) = -3 Can't calculate square root of the right side. The solution to this equation could not be determined.
| 2x-6=3x-2 | | -12x=-288 | | 4x=112 | | -2x=656 | | 5y-3=5y-y | | 9x=315 | | 16=-d+6 | | X-36=-5x+54 | | -3x=-57 | | 5x-(2x+12)=12 | | 4x=-96 | | 3d=21 | | 0=11x^2-19x-6 | | 4(3c-4)+2-4c= | | -11+3=-9x+2x | | 6x-15=-87 | | 4y^2-2y+1=0 | | 2-8x=-6 | | 5x+4x+3x=54 | | x^2+10=4x | | 10x-2x=16 | | 2x^3-5x^2+3x=0 | | 3r^2=5r-2 | | 4(4-7x)=-208 | | 15x+14=9x-28+90 | | 4a(a-7)-15=0 | | 11=t-14 | | -1-17=3w+3w | | n=4+m | | 15=-3c+6 | | 15=10+0.10*m | | 3x+1x+2x=54 |