If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying x2 + -4x + 20 = 21 Reorder the terms: 20 + -4x + x2 = 21 Solving 20 + -4x + x2 = 21 Solving for variable 'x'. Reorder the terms: 20 + -21 + -4x + x2 = 21 + -21 Combine like terms: 20 + -21 = -1 -1 + -4x + x2 = 21 + -21 Combine like terms: 21 + -21 = 0 -1 + -4x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '1' to each side of the equation. -1 + -4x + 1 + x2 = 0 + 1 Reorder the terms: -1 + 1 + -4x + x2 = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -4x + x2 = 0 + 1 -4x + x2 = 0 + 1 Combine like terms: 0 + 1 = 1 -4x + x2 = 1 The x term is -4x. Take half its coefficient (-2). Square it (4) and add it to both sides. Add '4' to each side of the equation. -4x + 4 + x2 = 1 + 4 Reorder the terms: 4 + -4x + x2 = 1 + 4 Combine like terms: 1 + 4 = 5 4 + -4x + x2 = 5 Factor a perfect square on the left side: (x + -2)(x + -2) = 5 Calculate the square root of the right side: 2.236067978 Break this problem into two subproblems by setting (x + -2) equal to 2.236067978 and -2.236067978.Subproblem 1
x + -2 = 2.236067978 Simplifying x + -2 = 2.236067978 Reorder the terms: -2 + x = 2.236067978 Solving -2 + x = 2.236067978 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = 2.236067978 + 2 Combine like terms: -2 + 2 = 0 0 + x = 2.236067978 + 2 x = 2.236067978 + 2 Combine like terms: 2.236067978 + 2 = 4.236067978 x = 4.236067978 Simplifying x = 4.236067978Subproblem 2
x + -2 = -2.236067978 Simplifying x + -2 = -2.236067978 Reorder the terms: -2 + x = -2.236067978 Solving -2 + x = -2.236067978 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = -2.236067978 + 2 Combine like terms: -2 + 2 = 0 0 + x = -2.236067978 + 2 x = -2.236067978 + 2 Combine like terms: -2.236067978 + 2 = -0.236067978 x = -0.236067978 Simplifying x = -0.236067978Solution
The solution to the problem is based on the solutions from the subproblems. x = {4.236067978, -0.236067978}
| 4x+3_2=9-2x | | 2x-7=x^2-5x-5x+25 | | 6v+7=98-7v | | 9v-7=2v+40 | | 3√x+2=0 | | -9+(-13)= | | 6-11y=-5 | | 3(2x+5)=10x-3+2x | | 12x^2-12+7x=0 | | 88-32=16/3(x-7) | | 5x+8-9x=2(3-2x) | | p-32=16/3(20-7) | | p-32=16/3(18-7) | | 8-(21)= | | 67-6x=12x+19 | | -9=1t+4s | | -4(x+10)6=-3(x-2) | | 2b-84+b=84 | | x^3+x^2*(a+b+c)+x*(a*b+b*c+c*a)+a*b*c=0 | | 2/3(9x-3)=-4+8 | | x^3+3x-36x-108=0 | | 7x-5x-3=13x-7x+5 | | 7(0)+4(y)=5 | | 7(x)+4(0)=5 | | 2x^3+4=x^2+8x | | 4x+2[4-2(x+2)]=2(x-2) | | 5d=9a-18 | | x-x=3*2 | | x-x=3 | | 25x+5=50 | | 8-9x=8x+24 | | 7x+11=4x+38 |