If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying -4.0x2 + 20x + 65 = 0 Reorder the terms: 65 + 20x + -4.0x2 = 0 Solving 65 + 20x + -4.0x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by -4.0 the coefficient of the squared term: Divide each side by '-4.0'. -16.25 + -5x + x2 = 0 Move the constant term to the right: Add '16.25' to each side of the equation. -16.25 + -5x + 16.25 + x2 = 0 + 16.25 Reorder the terms: -16.25 + 16.25 + -5x + x2 = 0 + 16.25 Combine like terms: -16.25 + 16.25 = 0.00 0.00 + -5x + x2 = 0 + 16.25 -5x + x2 = 0 + 16.25 Combine like terms: 0 + 16.25 = 16.25 -5x + x2 = 16.25 The x term is -5x. Take half its coefficient (-2.5). Square it (6.25) and add it to both sides. Add '6.25' to each side of the equation. -5x + 6.25 + x2 = 16.25 + 6.25 Reorder the terms: 6.25 + -5x + x2 = 16.25 + 6.25 Combine like terms: 16.25 + 6.25 = 22.5 6.25 + -5x + x2 = 22.5 Factor a perfect square on the left side: (x + -2.5)(x + -2.5) = 22.5 Calculate the square root of the right side: 4.74341649 Break this problem into two subproblems by setting (x + -2.5) equal to 4.74341649 and -4.74341649.Subproblem 1
x + -2.5 = 4.74341649 Simplifying x + -2.5 = 4.74341649 Reorder the terms: -2.5 + x = 4.74341649 Solving -2.5 + x = 4.74341649 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = 4.74341649 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = 4.74341649 + 2.5 x = 4.74341649 + 2.5 Combine like terms: 4.74341649 + 2.5 = 7.24341649 x = 7.24341649 Simplifying x = 7.24341649Subproblem 2
x + -2.5 = -4.74341649 Simplifying x + -2.5 = -4.74341649 Reorder the terms: -2.5 + x = -4.74341649 Solving -2.5 + x = -4.74341649 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = -4.74341649 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = -4.74341649 + 2.5 x = -4.74341649 + 2.5 Combine like terms: -4.74341649 + 2.5 = -2.24341649 x = -2.24341649 Simplifying x = -2.24341649Solution
The solution to the problem is based on the solutions from the subproblems. x = {7.24341649, -2.24341649}
| 4xy+40xy=1100 | | -36-9=y | | 5x+20y+15=0 | | y^2+20y+352=0 | | X^2-13x+65=0 | | 17=-28+x | | w^2-10w+37=0 | | -3(2x+5)=-4(x-1) | | 2x-16y=64 | | 9-14x-5-7x=7 | | -9(x+3)=-10x | | X^2+2=143 | | 49p^2-4=32 | | 3(x+2)=-9-3(2x+1) | | 2x^2+x+7=4x+5 | | (4-x)(4+x)-x=2(4x+3) | | 5(w+8)-(-3w-7)=7w | | -71/3=p-4/9 | | 8(-5n+7)-7= | | 4x-7=-30 | | x-63=6(2x+3)-15 | | -2x+10y=0 | | -x^2-3x+1= | | -7(x+9)+72=16-8x | | 6x^3-17x+13=20x^3-32 | | 3v^2-24v=0 | | 2(x+8)-2=42-2x | | 40-r=11 | | 7x^2y+3xy^2-7yx^2+2-7y^2x= | | .66x+.33=.66 | | 4x-0= | | -3p-6+7b=6 |