If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying d2 + -30d + 7 = 0 Reorder the terms: 7 + -30d + d2 = 0 Solving 7 + -30d + d2 = 0 Solving for variable 'd'. Begin completing the square. Move the constant term to the right: Add '-7' to each side of the equation. 7 + -30d + -7 + d2 = 0 + -7 Reorder the terms: 7 + -7 + -30d + d2 = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -30d + d2 = 0 + -7 -30d + d2 = 0 + -7 Combine like terms: 0 + -7 = -7 -30d + d2 = -7 The d term is -30d. Take half its coefficient (-15). Square it (225) and add it to both sides. Add '225' to each side of the equation. -30d + 225 + d2 = -7 + 225 Reorder the terms: 225 + -30d + d2 = -7 + 225 Combine like terms: -7 + 225 = 218 225 + -30d + d2 = 218 Factor a perfect square on the left side: (d + -15)(d + -15) = 218 Calculate the square root of the right side: 14.76482306 Break this problem into two subproblems by setting (d + -15) equal to 14.76482306 and -14.76482306.Subproblem 1
d + -15 = 14.76482306 Simplifying d + -15 = 14.76482306 Reorder the terms: -15 + d = 14.76482306 Solving -15 + d = 14.76482306 Solving for variable 'd'. Move all terms containing d to the left, all other terms to the right. Add '15' to each side of the equation. -15 + 15 + d = 14.76482306 + 15 Combine like terms: -15 + 15 = 0 0 + d = 14.76482306 + 15 d = 14.76482306 + 15 Combine like terms: 14.76482306 + 15 = 29.76482306 d = 29.76482306 Simplifying d = 29.76482306Subproblem 2
d + -15 = -14.76482306 Simplifying d + -15 = -14.76482306 Reorder the terms: -15 + d = -14.76482306 Solving -15 + d = -14.76482306 Solving for variable 'd'. Move all terms containing d to the left, all other terms to the right. Add '15' to each side of the equation. -15 + 15 + d = -14.76482306 + 15 Combine like terms: -15 + 15 = 0 0 + d = -14.76482306 + 15 d = -14.76482306 + 15 Combine like terms: -14.76482306 + 15 = 0.23517694 d = 0.23517694 Simplifying d = 0.23517694Solution
The solution to the problem is based on the solutions from the subproblems. d = {29.76482306, 0.23517694}
| 6(x-10)=-48 | | 11y=1-4x | | 1/3(9x-3)-3=4-x | | f^2+10f=-1 | | 9+5k=49 | | 7a+10b-6a-8b= | | 70/49 | | 3.6x+53.8=19.3-7.9x | | 11+5h=66 | | y^2-10y+7=0 | | 83+(x+90)+(x+69)=360 | | 10x-2y=-60 | | 34=4+5w | | 12.83*a+10.72*b=8660.34 | | 94=5z+9 | | r^2+8r=-5 | | 35=x-8+17 | | 8(9f+7)=-27+3f | | 14/0.5 | | 8=3u+u | | m^2+14m+31=0 | | 14+6j=92 | | (3x-5)(x-12)=0 | | 3/5-5=7 | | u^2+8u=23 | | 15d+9d= | | 6=7v+8(v-3) | | 18+3y+y=-18 | | 9+4s-6=5s+15-3s | | 37/40=x/100 | | 4-3x=3x-4 | | -3x+5=2x-3 |