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 + 8 = 0 Reorder the terms: 8 + 4r + r2 = 0 Solving 8 + 4r + r2 = 0 Solving for variable 'r'. Begin completing the square. Move the constant term to the right: Add '-8' to each side of the equation. 8 + 4r + -8 + r2 = 0 + -8 Reorder the terms: 8 + -8 + 4r + r2 = 0 + -8 Combine like terms: 8 + -8 = 0 0 + 4r + r2 = 0 + -8 4r + r2 = 0 + -8 Combine like terms: 0 + -8 = -8 4r + r2 = -8 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 = -8 + 4 Reorder the terms: 4 + 4r + r2 = -8 + 4 Combine like terms: -8 + 4 = -4 4 + 4r + r2 = -4 Factor a perfect square on the left side: (r + 2)(r + 2) = -4 Can't calculate square root of the right side. The solution to this equation could not be determined.
| 6n^2+6n=0 | | 4.7+s=9 | | 7a^2-28=0 | | 6n(n+1)=0 | | -3x+5(-2x+14)=-12 | | 3x+5=7x-11 | | 445+25x=570 | | 6x^2-11x+7=0 | | 6y^3-4y^2= | | -3x^2-8x+1=-10x | | 5t^2+28t+32=0 | | 5x+1=-5x+1 | | 24x^3-44x^2+28x=0 | | 2x+42=112 | | 3(y-6)+9=144 | | 2x+42=1 | | 18x^3y-3x^2y^2= | | 7x^2-8x=-1 | | 42y^3-7y^2= | | 5x+3(6x+4)=196 | | 2x^2-3x=8 | | (-8a^3-14a^2)-(-14a^3-18a^2)= | | 6.95x+5.25=40 | | 16a^2-36a-10=0 | | x^3-15y^2-54= | | -36-6x=-4x+22 | | 1r-6r^2=-1 | | 9x-14=2x | | 3c-8=31 | | 10-14xy+12xy+21= | | 11m=18 | | -5.4-7.8x=78.408 |