If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying 2x2 + -21x + 4 = 0 Reorder the terms: 4 + -21x + 2x2 = 0 Solving 4 + -21x + 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'. 2 + -10.5x + x2 = 0 Move the constant term to the right: Add '-2' to each side of the equation. 2 + -10.5x + -2 + x2 = 0 + -2 Reorder the terms: 2 + -2 + -10.5x + x2 = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -10.5x + x2 = 0 + -2 -10.5x + x2 = 0 + -2 Combine like terms: 0 + -2 = -2 -10.5x + x2 = -2 The x term is -10.5x. Take half its coefficient (-5.25). Square it (27.5625) and add it to both sides. Add '27.5625' to each side of the equation. -10.5x + 27.5625 + x2 = -2 + 27.5625 Reorder the terms: 27.5625 + -10.5x + x2 = -2 + 27.5625 Combine like terms: -2 + 27.5625 = 25.5625 27.5625 + -10.5x + x2 = 25.5625 Factor a perfect square on the left side: (x + -5.25)(x + -5.25) = 25.5625 Calculate the square root of the right side: 5.055937104 Break this problem into two subproblems by setting (x + -5.25) equal to 5.055937104 and -5.055937104.Subproblem 1
x + -5.25 = 5.055937104 Simplifying x + -5.25 = 5.055937104 Reorder the terms: -5.25 + x = 5.055937104 Solving -5.25 + x = 5.055937104 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.25' to each side of the equation. -5.25 + 5.25 + x = 5.055937104 + 5.25 Combine like terms: -5.25 + 5.25 = 0.00 0.00 + x = 5.055937104 + 5.25 x = 5.055937104 + 5.25 Combine like terms: 5.055937104 + 5.25 = 10.305937104 x = 10.305937104 Simplifying x = 10.305937104Subproblem 2
x + -5.25 = -5.055937104 Simplifying x + -5.25 = -5.055937104 Reorder the terms: -5.25 + x = -5.055937104 Solving -5.25 + x = -5.055937104 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.25' to each side of the equation. -5.25 + 5.25 + x = -5.055937104 + 5.25 Combine like terms: -5.25 + 5.25 = 0.00 0.00 + x = -5.055937104 + 5.25 x = -5.055937104 + 5.25 Combine like terms: -5.055937104 + 5.25 = 0.194062896 x = 0.194062896 Simplifying x = 0.194062896Solution
The solution to the problem is based on the solutions from the subproblems. x = {10.305937104, 0.194062896}
| 6x-5=3x+6 | | 4.2=t-3.6 | | 7x^2-19x+9-1=0 | | -h/6.7=3 | | 20-p=2(4.5p-25)-10 | | 6x+145=15x-8 | | 15x^2=1 | | 2x^2+2x+56=0 | | 1/4y-1=2/5 | | 4.1-19.6x=4.2-1.99x | | 5+78x=52x+13 | | 7a+12a-11=0 | | -20+25=m-7 | | 6(f+5)=-2f-6+4f | | 28b=(-131.6) | | x-(x*.2)=388 | | 5x^2+42x+19-3=0 | | 0.4=1 | | (x-2/x)-(7/3)-(x-2/x^2) | | x^4+12x^2-36=0 | | 0.17k-1.6=0.32v-2 | | 14+w=(-17) | | 3(9-x)=115 | | (3x-18)= | | Y=7x^4-19x^3+15x^2-x-2 | | 2x^2-11x+4=0 | | 2b=11 | | 4m+6=-3m-22 | | 2x^2-16x+96=0 | | 4sin^2x+3sinx-1=0 | | -x^3-5x^2-2=6x | | 8b-4c= |