If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying 0 = 3X2 + 8X + -21 Reorder the terms: 0 = -21 + 8X + 3X2 Solving 0 = -21 + 8X + 3X2 Solving for variable 'X'. Combine like terms: 0 + 21 = 21 21 + -8X + -3X2 = -21 + 8X + 3X2 + 21 + -8X + -3X2 Reorder the terms: 21 + -8X + -3X2 = -21 + 21 + 8X + -8X + 3X2 + -3X2 Combine like terms: -21 + 21 = 0 21 + -8X + -3X2 = 0 + 8X + -8X + 3X2 + -3X2 21 + -8X + -3X2 = 8X + -8X + 3X2 + -3X2 Combine like terms: 8X + -8X = 0 21 + -8X + -3X2 = 0 + 3X2 + -3X2 21 + -8X + -3X2 = 3X2 + -3X2 Combine like terms: 3X2 + -3X2 = 0 21 + -8X + -3X2 = 0 Begin completing the square. Divide all terms by -3 the coefficient of the squared term: Divide each side by '-3'. -7 + 2.666666667X + X2 = 0 Move the constant term to the right: Add '7' to each side of the equation. -7 + 2.666666667X + 7 + X2 = 0 + 7 Reorder the terms: -7 + 7 + 2.666666667X + X2 = 0 + 7 Combine like terms: -7 + 7 = 0 0 + 2.666666667X + X2 = 0 + 7 2.666666667X + X2 = 0 + 7 Combine like terms: 0 + 7 = 7 2.666666667X + X2 = 7 The X term is 2.666666667X. Take half its coefficient (1.333333334). Square it (1.777777780) and add it to both sides. Add '1.777777780' to each side of the equation. 2.666666667X + 1.777777780 + X2 = 7 + 1.777777780 Reorder the terms: 1.777777780 + 2.666666667X + X2 = 7 + 1.777777780 Combine like terms: 7 + 1.777777780 = 8.77777778 1.777777780 + 2.666666667X + X2 = 8.77777778 Factor a perfect square on the left side: (X + 1.333333334)(X + 1.333333334) = 8.77777778 Calculate the square root of the right side: 2.962731473 Break this problem into two subproblems by setting (X + 1.333333334) equal to 2.962731473 and -2.962731473.Subproblem 1
X + 1.333333334 = 2.962731473 Simplifying X + 1.333333334 = 2.962731473 Reorder the terms: 1.333333334 + X = 2.962731473 Solving 1.333333334 + X = 2.962731473 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-1.333333334' to each side of the equation. 1.333333334 + -1.333333334 + X = 2.962731473 + -1.333333334 Combine like terms: 1.333333334 + -1.333333334 = 0.000000000 0.000000000 + X = 2.962731473 + -1.333333334 X = 2.962731473 + -1.333333334 Combine like terms: 2.962731473 + -1.333333334 = 1.629398139 X = 1.629398139 Simplifying X = 1.629398139Subproblem 2
X + 1.333333334 = -2.962731473 Simplifying X + 1.333333334 = -2.962731473 Reorder the terms: 1.333333334 + X = -2.962731473 Solving 1.333333334 + X = -2.962731473 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-1.333333334' to each side of the equation. 1.333333334 + -1.333333334 + X = -2.962731473 + -1.333333334 Combine like terms: 1.333333334 + -1.333333334 = 0.000000000 0.000000000 + X = -2.962731473 + -1.333333334 X = -2.962731473 + -1.333333334 Combine like terms: -2.962731473 + -1.333333334 = -4.296064807 X = -4.296064807 Simplifying X = -4.296064807Solution
The solution to the problem is based on the solutions from the subproblems. X = {1.629398139, -4.296064807}
| 2+10x=490 | | 4(2x-2)=5x-32 | | (x^2+6x)(x-3)=48 | | X^2+21=4X^2+8X+4 | | 15x*30=60 | | 3/4k | | -8[-6-3]= | | 24+(-32)= | | 3(2+t)= | | 15(-6)= | | -13-(-6)= | | 35/(c+2) | | -11-8x=53-15x | | 35/c | | 0,12x=48 | | 8+10=116+x | | 9x^2+5x=2 | | 2x/5+7=-3x/10 | | 2(x-1)=4x+8 | | n=0.9r+19 | | 3-2x=5x+10 | | -3(x+4)=-(-2x+6)-1 | | 4x-(2+x)=7 | | 2x+x+8=56 | | 16x-8=-4 | | 3-5y-8y^2=0 | | -5-3x=2-(x+1) | | 2(x-6)=20-2x | | n^2+4n= | | -2(-x-4)-5=-(-x-1) | | 13-8x=47-22 | | 2(x-2)=4(x+3) |