If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying 2x * x + 8x + -7 = 0 Multiply x * x 2x2 + 8x + -7 = 0 Reorder the terms: -7 + 8x + 2x2 = 0 Solving -7 + 8x + 2x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. -3.5 + 4x + x2 = 0 Move the constant term to the right: Add '3.5' to each side of the equation. -3.5 + 4x + 3.5 + x2 = 0 + 3.5 Reorder the terms: -3.5 + 3.5 + 4x + x2 = 0 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + 4x + x2 = 0 + 3.5 4x + x2 = 0 + 3.5 Combine like terms: 0 + 3.5 = 3.5 4x + x2 = 3.5 The x term is 4x. Take half its coefficient (2). Square it (4) and add it to both sides. Add '4' to each side of the equation. 4x + 4 + x2 = 3.5 + 4 Reorder the terms: 4 + 4x + x2 = 3.5 + 4 Combine like terms: 3.5 + 4 = 7.5 4 + 4x + x2 = 7.5 Factor a perfect square on the left side: (x + 2)(x + 2) = 7.5 Calculate the square root of the right side: 2.738612788 Break this problem into two subproblems by setting (x + 2) equal to 2.738612788 and -2.738612788.Subproblem 1
x + 2 = 2.738612788 Simplifying x + 2 = 2.738612788 Reorder the terms: 2 + x = 2.738612788 Solving 2 + x = 2.738612788 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = 2.738612788 + -2 Combine like terms: 2 + -2 = 0 0 + x = 2.738612788 + -2 x = 2.738612788 + -2 Combine like terms: 2.738612788 + -2 = 0.738612788 x = 0.738612788 Simplifying x = 0.738612788Subproblem 2
x + 2 = -2.738612788 Simplifying x + 2 = -2.738612788 Reorder the terms: 2 + x = -2.738612788 Solving 2 + x = -2.738612788 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = -2.738612788 + -2 Combine like terms: 2 + -2 = 0 0 + x = -2.738612788 + -2 x = -2.738612788 + -2 Combine like terms: -2.738612788 + -2 = -4.738612788 x = -4.738612788 Simplifying x = -4.738612788Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.738612788, -4.738612788}
| ln(x)=2.68 | | (t)4-6=9 | | 15v-7v=16 | | 8x=-6+11 | | 162=-9(-2+x) | | (a)4+6=14 | | -7c-17=-15-10c | | 12m=91-m | | -2(2-x)=3 | | 4+8(2x+3)+6x=50 | | 2b+(3b-2)+(b+7)=65 | | 3(20x+75)=825 | | 2w+9-16=-19 | | 4x+2(3x+1)=32 | | -4+12-17=x | | 2n+150=3450 | | 16=y/4-15 | | 64x^2-144x-81=0 | | -1=a-3/20 | | 4a-3a=0 | | 4x^2+19xy-5y^2=0 | | 4(q+5)= | | 98=-7x+7 | | 4=4x+3x-10 | | 9(r+8)+7r= | | -2=x/12-3 | | 16=-4Y+2(y+7) | | 36=8n+4 | | 4x-2(x-4)=-5+4x+1 | | -84=2(-4-5k)+4 | | 13m+2n-3m+7n= | | 3x-x^(3/2)=0 |