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 + 7 = 0 Reorder the terms: 7 + 9x + -7x2 = 0 Solving 7 + 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'. -1 + -1.285714286x + x2 = 0 Move the constant term to the right: Add '1' to each side of the equation. -1 + -1.285714286x + 1 + x2 = 0 + 1 Reorder the terms: -1 + 1 + -1.285714286x + x2 = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -1.285714286x + x2 = 0 + 1 -1.285714286x + x2 = 0 + 1 Combine like terms: 0 + 1 = 1 -1.285714286x + x2 = 1 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 = 1 + 0.4132653063 Reorder the terms: 0.4132653063 + -1.285714286x + x2 = 1 + 0.4132653063 Combine like terms: 1 + 0.4132653063 = 1.4132653063 0.4132653063 + -1.285714286x + x2 = 1.4132653063 Factor a perfect square on the left side: (x + -0.642857143)(x + -0.642857143) = 1.4132653063 Calculate the square root of the right side: 1.188808356 Break this problem into two subproblems by setting (x + -0.642857143) equal to 1.188808356 and -1.188808356.Subproblem 1
x + -0.642857143 = 1.188808356 Simplifying x + -0.642857143 = 1.188808356 Reorder the terms: -0.642857143 + x = 1.188808356 Solving -0.642857143 + x = 1.188808356 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 = 1.188808356 + 0.642857143 Combine like terms: -0.642857143 + 0.642857143 = 0.000000000 0.000000000 + x = 1.188808356 + 0.642857143 x = 1.188808356 + 0.642857143 Combine like terms: 1.188808356 + 0.642857143 = 1.831665499 x = 1.831665499 Simplifying x = 1.831665499Subproblem 2
x + -0.642857143 = -1.188808356 Simplifying x + -0.642857143 = -1.188808356 Reorder the terms: -0.642857143 + x = -1.188808356 Solving -0.642857143 + x = -1.188808356 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 = -1.188808356 + 0.642857143 Combine like terms: -0.642857143 + 0.642857143 = 0.000000000 0.000000000 + x = -1.188808356 + 0.642857143 x = -1.188808356 + 0.642857143 Combine like terms: -1.188808356 + 0.642857143 = -0.545951213 x = -0.545951213 Simplifying x = -0.545951213Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.831665499, -0.545951213}
| -5x+13=5x+3 | | -0.4x-0.8y=0.10 | | y=3(3)+5 | | x+3(3x+5)=-5 | | 10(-3)-3y=-30 | | 2x-3(x-2)=6 | | 6x-25.50=45 | | 10*10-3y=-30 | | 2//x=7/21 | | 2/x=7/21 | | 6(4b-7)=-2b+36 | | 1500+.03x=.6555x | | (3X-2)+3=7 | | b^11+2=5 | | 1500+0.03x=.6855x | | 30+10+10x=100 | | 3s+10=12 | | d^1=2 | | 2r+6+3=7 | | 36a^2+120a+100= | | 4y+4y=10 | | g(2)+225=1020 | | 5t+8k=f^6 | | 1000+0.03x=0.6855x | | 6(2n+3)=6(4n+1)+1 | | y+1.6=-7.3 | | (x+2y)dx+xdy=0 | | (10a-b)(10a+b)= | | 500+0.03x=0.8105x | | 6(-2)-2y=-12 | | 6*6-2y=-12 | | 500=.8105x |