If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying 7x2 = 9 + -8x Solving 7x2 = 9 + -8x Solving for variable 'x'. Reorder the terms: -9 + 8x + 7x2 = 9 + -8x + -9 + 8x Reorder the terms: -9 + 8x + 7x2 = 9 + -9 + -8x + 8x Combine like terms: 9 + -9 = 0 -9 + 8x + 7x2 = 0 + -8x + 8x -9 + 8x + 7x2 = -8x + 8x Combine like terms: -8x + 8x = 0 -9 + 8x + 7x2 = 0 Begin completing the square. Divide all terms by 7 the coefficient of the squared term: Divide each side by '7'. -1.285714286 + 1.142857143x + x2 = 0 Move the constant term to the right: Add '1.285714286' to each side of the equation. -1.285714286 + 1.142857143x + 1.285714286 + x2 = 0 + 1.285714286 Reorder the terms: -1.285714286 + 1.285714286 + 1.142857143x + x2 = 0 + 1.285714286 Combine like terms: -1.285714286 + 1.285714286 = 0.000000000 0.000000000 + 1.142857143x + x2 = 0 + 1.285714286 1.142857143x + x2 = 0 + 1.285714286 Combine like terms: 0 + 1.285714286 = 1.285714286 1.142857143x + x2 = 1.285714286 The x term is 1.142857143x. Take half its coefficient (0.5714285715). Square it (0.3265306123) and add it to both sides. Add '0.3265306123' to each side of the equation. 1.142857143x + 0.3265306123 + x2 = 1.285714286 + 0.3265306123 Reorder the terms: 0.3265306123 + 1.142857143x + x2 = 1.285714286 + 0.3265306123 Combine like terms: 1.285714286 + 0.3265306123 = 1.6122448983 0.3265306123 + 1.142857143x + x2 = 1.6122448983 Factor a perfect square on the left side: (x + 0.5714285715)(x + 0.5714285715) = 1.6122448983 Calculate the square root of the right side: 1.26974206 Break this problem into two subproblems by setting (x + 0.5714285715) equal to 1.26974206 and -1.26974206.Subproblem 1
x + 0.5714285715 = 1.26974206 Simplifying x + 0.5714285715 = 1.26974206 Reorder the terms: 0.5714285715 + x = 1.26974206 Solving 0.5714285715 + x = 1.26974206 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5714285715' to each side of the equation. 0.5714285715 + -0.5714285715 + x = 1.26974206 + -0.5714285715 Combine like terms: 0.5714285715 + -0.5714285715 = 0.0000000000 0.0000000000 + x = 1.26974206 + -0.5714285715 x = 1.26974206 + -0.5714285715 Combine like terms: 1.26974206 + -0.5714285715 = 0.6983134885 x = 0.6983134885 Simplifying x = 0.6983134885Subproblem 2
x + 0.5714285715 = -1.26974206 Simplifying x + 0.5714285715 = -1.26974206 Reorder the terms: 0.5714285715 + x = -1.26974206 Solving 0.5714285715 + x = -1.26974206 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5714285715' to each side of the equation. 0.5714285715 + -0.5714285715 + x = -1.26974206 + -0.5714285715 Combine like terms: 0.5714285715 + -0.5714285715 = 0.0000000000 0.0000000000 + x = -1.26974206 + -0.5714285715 x = -1.26974206 + -0.5714285715 Combine like terms: -1.26974206 + -0.5714285715 = -1.8411706315 x = -1.8411706315 Simplifying x = -1.8411706315Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.6983134885, -1.8411706315}
| 3/2=-6 | | 5-13n=7 | | 0.006(6-k)+0.05(k-8)=1 | | 3-8n=10-8n+n | | 5(1+6a)=-31-6a | | 11k-28/21+4/3=0 | | -6(7b-1)=-6(6b-4) | | 42=(2.5*x)+x | | .70(20+x)=.30(2x-1) | | 2(x+2)-7=1 | | -5(-7r+1)=170 | | 19m-8-3m=15m-19 | | 8+5x=8(7x+1) | | x^2-8x+16=-4 | | 2(x-2)-7=1 | | 8p+40=4(1+5p) | | 3x^2+9=8x+7 | | 3r+7=15+2b | | 7x^2-44x+4=-8 | | z/6+8=-1 | | p-5/8=56 | | -5x+1=-6x+5 | | 8.3=4.1z+10.5 | | 91=-4x-7(-2x-3) | | 6x^7+20x^6-16x^5=0 | | 1/3w=33 | | 6(q-7)-3(4-q)=-30 | | 5x-3x+3=20+4-3x | | 28d+11-4d=-3(-8d-7) | | -4p+7p+11=3+3p | | 20-2x+5x-20=9x-20 | | 5x+15tx(200-20x)=60 |