If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying 7x2 + -9x + -120 = 0 Reorder the terms: -120 + -9x + 7x2 = 0 Solving -120 + -9x + 7x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 7 the coefficient of the squared term: Divide each side by '7'. -17.14285714 + -1.285714286x + x2 = 0 Move the constant term to the right: Add '17.14285714' to each side of the equation. -17.14285714 + -1.285714286x + 17.14285714 + x2 = 0 + 17.14285714 Reorder the terms: -17.14285714 + 17.14285714 + -1.285714286x + x2 = 0 + 17.14285714 Combine like terms: -17.14285714 + 17.14285714 = 0.00000000 0.00000000 + -1.285714286x + x2 = 0 + 17.14285714 -1.285714286x + x2 = 0 + 17.14285714 Combine like terms: 0 + 17.14285714 = 17.14285714 -1.285714286x + x2 = 17.14285714 The x term is -1.285714286x. Take half its coefficient (-0.642857143). Square it (0.4132653063) and add it to both sides. Add '0.4132653063' to each side of the equation. -1.285714286x + 0.4132653063 + x2 = 17.14285714 + 0.4132653063 Reorder the terms: 0.4132653063 + -1.285714286x + x2 = 17.14285714 + 0.4132653063 Combine like terms: 17.14285714 + 0.4132653063 = 17.5561224463 0.4132653063 + -1.285714286x + x2 = 17.5561224463 Factor a perfect square on the left side: (x + -0.642857143)(x + -0.642857143) = 17.5561224463 Calculate the square root of the right side: 4.190002679 Break this problem into two subproblems by setting (x + -0.642857143) equal to 4.190002679 and -4.190002679.Subproblem 1
x + -0.642857143 = 4.190002679 Simplifying x + -0.642857143 = 4.190002679 Reorder the terms: -0.642857143 + x = 4.190002679 Solving -0.642857143 + x = 4.190002679 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.642857143' to each side of the equation. -0.642857143 + 0.642857143 + x = 4.190002679 + 0.642857143 Combine like terms: -0.642857143 + 0.642857143 = 0.000000000 0.000000000 + x = 4.190002679 + 0.642857143 x = 4.190002679 + 0.642857143 Combine like terms: 4.190002679 + 0.642857143 = 4.832859822 x = 4.832859822 Simplifying x = 4.832859822Subproblem 2
x + -0.642857143 = -4.190002679 Simplifying x + -0.642857143 = -4.190002679 Reorder the terms: -0.642857143 + x = -4.190002679 Solving -0.642857143 + x = -4.190002679 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.642857143' to each side of the equation. -0.642857143 + 0.642857143 + x = -4.190002679 + 0.642857143 Combine like terms: -0.642857143 + 0.642857143 = 0.000000000 0.000000000 + x = -4.190002679 + 0.642857143 x = -4.190002679 + 0.642857143 Combine like terms: -4.190002679 + 0.642857143 = -3.547145536 x = -3.547145536 Simplifying x = -3.547145536Solution
The solution to the problem is based on the solutions from the subproblems. x = {4.832859822, -3.547145536}
| 10+5x=2x-11x | | 18=-7y+5y | | -16x+13=-20x+23 | | 7x+24=-16-3k | | 8-a^3=0 | | 0=85+12x-4.9x^2 | | 7(x+7)-11x=-3 | | -16x+13=-20x+10 | | -15x+5=-14x-14-14x | | 968=(8+2x)(30+2x) | | 3x+7whenx=3 | | 5(y-4)=7(27+1) | | 11(p+8)=-4(7p-11)+5 | | -5(n+4)+22=-2n-16 | | m(4-1)+4=27 | | 6x+5=3x-19 | | 26x+13=24x-25 | | -2=(x-8) | | (-t)+5=t-19 | | 2(m)-16=44 | | -13-12x=10-11x | | 9(15-3*3)= | | 7rs+6qr-2st=-9 | | 45=x(x-12) | | 12x+7y=5 | | f(f(x))=16x-5 | | 0.02(5-x)+0.03=0.5(7+x) | | a^3b-9a^2b^2+20ab^3=0 | | -18+23=-5(x+5) | | 13.7+4=17.7 | | 0.06x=0.6 | | 9*(15-3*3)= |