If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying r2 + 7r + -10 = 0 Reorder the terms: -10 + 7r + r2 = 0 Solving -10 + 7r + r2 = 0 Solving for variable 'r'. Begin completing the square. Move the constant term to the right: Add '10' to each side of the equation. -10 + 7r + 10 + r2 = 0 + 10 Reorder the terms: -10 + 10 + 7r + r2 = 0 + 10 Combine like terms: -10 + 10 = 0 0 + 7r + r2 = 0 + 10 7r + r2 = 0 + 10 Combine like terms: 0 + 10 = 10 7r + r2 = 10 The r term is 7r. Take half its coefficient (3.5). Square it (12.25) and add it to both sides. Add '12.25' to each side of the equation. 7r + 12.25 + r2 = 10 + 12.25 Reorder the terms: 12.25 + 7r + r2 = 10 + 12.25 Combine like terms: 10 + 12.25 = 22.25 12.25 + 7r + r2 = 22.25 Factor a perfect square on the left side: (r + 3.5)(r + 3.5) = 22.25 Calculate the square root of the right side: 4.716990566 Break this problem into two subproblems by setting (r + 3.5) equal to 4.716990566 and -4.716990566.Subproblem 1
r + 3.5 = 4.716990566 Simplifying r + 3.5 = 4.716990566 Reorder the terms: 3.5 + r = 4.716990566 Solving 3.5 + r = 4.716990566 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-3.5' to each side of the equation. 3.5 + -3.5 + r = 4.716990566 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + r = 4.716990566 + -3.5 r = 4.716990566 + -3.5 Combine like terms: 4.716990566 + -3.5 = 1.216990566 r = 1.216990566 Simplifying r = 1.216990566Subproblem 2
r + 3.5 = -4.716990566 Simplifying r + 3.5 = -4.716990566 Reorder the terms: 3.5 + r = -4.716990566 Solving 3.5 + r = -4.716990566 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-3.5' to each side of the equation. 3.5 + -3.5 + r = -4.716990566 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + r = -4.716990566 + -3.5 r = -4.716990566 + -3.5 Combine like terms: -4.716990566 + -3.5 = -8.216990566 r = -8.216990566 Simplifying r = -8.216990566Solution
The solution to the problem is based on the solutions from the subproblems. r = {1.216990566, -8.216990566}
| 21v-8v^2-9=0 | | 3(-5+x)=-24 | | 32x-7-4x=0 | | 3+30x=20x+9 | | 15x=10-(-5) | | 5t+7=c+1 | | 2x+25=148 | | -1+4x=-4+13 | | 3x+53=8x+5 | | 4x+9x+9=15 | | 4x+7=-63-6x | | 6x^2+x^1-2=0 | | x^2-2x-2x-35=0 | | x^2+18y=0 | | 6y^2-18x=0 | | 240=7.50x+5.00y | | (5+2(-3))+12= | | 6x-18y=0 | | 5x-2x+2=-2x+15 | | y^2+18x=0 | | 11x-16=4x+4 | | 12x^2-41x+18=0 | | .8888x+10+2x+1=90 | | 8(y-5)=6y | | y=9x+b | | x+20=2(x+19) | | 16x^4+63x^2-4=0 | | -3x-(-5)=11 | | 2x^2+y-42=0 | | 8+10x=-46+x | | 0.27x+8.3=2.7x+1.01 | | 4(x+2)-3x=12 |