If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying 2r2 + 1r + 13 = 4 Reorder the terms: 13 + 1r + 2r2 = 4 Solving 13 + 1r + 2r2 = 4 Solving for variable 'r'. Reorder the terms: 13 + -4 + 1r + 2r2 = 4 + -4 Combine like terms: 13 + -4 = 9 9 + 1r + 2r2 = 4 + -4 Combine like terms: 4 + -4 = 0 9 + 1r + 2r2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. 4.5 + 0.5r + r2 = 0 Move the constant term to the right: Add '-4.5' to each side of the equation. 4.5 + 0.5r + -4.5 + r2 = 0 + -4.5 Reorder the terms: 4.5 + -4.5 + 0.5r + r2 = 0 + -4.5 Combine like terms: 4.5 + -4.5 = 0.0 0.0 + 0.5r + r2 = 0 + -4.5 0.5r + r2 = 0 + -4.5 Combine like terms: 0 + -4.5 = -4.5 0.5r + r2 = -4.5 The r term is 0.5r. Take half its coefficient (0.25). Square it (0.0625) and add it to both sides. Add '0.0625' to each side of the equation. 0.5r + 0.0625 + r2 = -4.5 + 0.0625 Reorder the terms: 0.0625 + 0.5r + r2 = -4.5 + 0.0625 Combine like terms: -4.5 + 0.0625 = -4.4375 0.0625 + 0.5r + r2 = -4.4375 Factor a perfect square on the left side: (r + 0.25)(r + 0.25) = -4.4375 Can't calculate square root of the right side. The solution to this equation could not be determined.
| 150+25x=45x | | (x^3+8)(x^4-9x^2)=0 | | 6r^2+7r+2=0 | | Y=15x+300 | | 2(1.5n+4)-6=7 | | g^2-20g=-49 | | 2(7-x)-4x=20 | | 7x+3y=6-5 | | 6(3x+10)=18x-3 | | 5j-12+15+3-j=10 | | -28=-5+8(x-7) | | an=65-100 | | 5x-2x+2= | | 13x+23y=-29 | | 7p-10=-8p+4p | | -x+4y-7x+8y+(3x)-2y= | | (x-4)(x^2-5x+3)= | | -7.2x+2=0.8x+4.5 | | 2(6-A)=-5A-9 | | 2x+2=-13-3 | | -3(m-2n)=5mn | | =5b-3b | | p=6-2qgraph | | -2(m+8)=-3(27-m) | | j^2+28j-11=0 | | w=x+5v | | 6z-12=30 | | 11x-6=5(2x+4)-14 | | 1.4x+11=1.9x+7.5 | | -6x+11-3x=-33 | | 4m^2+9m+3=0 | | 9x+4=9x+1 |