If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying 7x2 + 15x = 5 Reorder the terms: 15x + 7x2 = 5 Solving 15x + 7x2 = 5 Solving for variable 'x'. Reorder the terms: -5 + 15x + 7x2 = 5 + -5 Combine like terms: 5 + -5 = 0 -5 + 15x + 7x2 = 0 Begin completing the square. Divide all terms by 7 the coefficient of the squared term: Divide each side by '7'. -0.7142857143 + 2.142857143x + x2 = 0 Move the constant term to the right: Add '0.7142857143' to each side of the equation. -0.7142857143 + 2.142857143x + 0.7142857143 + x2 = 0 + 0.7142857143 Reorder the terms: -0.7142857143 + 0.7142857143 + 2.142857143x + x2 = 0 + 0.7142857143 Combine like terms: -0.7142857143 + 0.7142857143 = 0.0000000000 0.0000000000 + 2.142857143x + x2 = 0 + 0.7142857143 2.142857143x + x2 = 0 + 0.7142857143 Combine like terms: 0 + 0.7142857143 = 0.7142857143 2.142857143x + x2 = 0.7142857143 The x term is 2.142857143x. Take half its coefficient (1.071428572). Square it (1.147959185) and add it to both sides. Add '1.147959185' to each side of the equation. 2.142857143x + 1.147959185 + x2 = 0.7142857143 + 1.147959185 Reorder the terms: 1.147959185 + 2.142857143x + x2 = 0.7142857143 + 1.147959185 Combine like terms: 0.7142857143 + 1.147959185 = 1.8622448993 1.147959185 + 2.142857143x + x2 = 1.8622448993 Factor a perfect square on the left side: (x + 1.071428572)(x + 1.071428572) = 1.8622448993 Calculate the square root of the right side: 1.364640942 Break this problem into two subproblems by setting (x + 1.071428572) equal to 1.364640942 and -1.364640942.Subproblem 1
x + 1.071428572 = 1.364640942 Simplifying x + 1.071428572 = 1.364640942 Reorder the terms: 1.071428572 + x = 1.364640942 Solving 1.071428572 + x = 1.364640942 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.071428572' to each side of the equation. 1.071428572 + -1.071428572 + x = 1.364640942 + -1.071428572 Combine like terms: 1.071428572 + -1.071428572 = 0.000000000 0.000000000 + x = 1.364640942 + -1.071428572 x = 1.364640942 + -1.071428572 Combine like terms: 1.364640942 + -1.071428572 = 0.29321237 x = 0.29321237 Simplifying x = 0.29321237Subproblem 2
x + 1.071428572 = -1.364640942 Simplifying x + 1.071428572 = -1.364640942 Reorder the terms: 1.071428572 + x = -1.364640942 Solving 1.071428572 + x = -1.364640942 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.071428572' to each side of the equation. 1.071428572 + -1.071428572 + x = -1.364640942 + -1.071428572 Combine like terms: 1.071428572 + -1.071428572 = 0.000000000 0.000000000 + x = -1.364640942 + -1.071428572 x = -1.364640942 + -1.071428572 Combine like terms: -1.364640942 + -1.071428572 = -2.436069514 x = -2.436069514 Simplifying x = -2.436069514Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.29321237, -2.436069514}
| 4x-3(x+8)=5x-2(x-12)-2x | | 23*?+44=159 | | x*x+4*x-252=0 | | 159=23*?+44 | | c=23+44 | | 2(y-3)-3(y-5)=5y | | 7x^2+8=-18t | | x-2x/8 | | 10p^2+21p=49 | | 5v^2+28v=-15 | | 7p+7=2(p+1) | | V^2+35=-12 | | R^2=56-r | | 5u-5-u=4u-4+9 | | 4x+3/4x=19 | | 20t-5(t-1)=0 | | 2a-10=4-5a | | 8(-3.6)-3(-3.6-3)= | | 8z-3(z-3)=-9 | | 4x^2+49=32 | | 3x+15y=6 | | 60+54.45x=57.95 | | 6x+11=4x-9 | | 21-9(21x+21)=14x-3 | | 3u(u+8)(u-4)=0 | | 19+3(2x-1)=18-(3x-7) | | (x-2)(x+2)=100 | | 5(3r-8)=-8r-2 | | 6(2x-5)-12=15+3(x-1) | | -8/7y=24 | | 9-5(x+4)=7x-(6x+5) | | y=3/5x-1/5 |