If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying a2 + -21a + 28 = 0 Reorder the terms: 28 + -21a + a2 = 0 Solving 28 + -21a + a2 = 0 Solving for variable 'a'. Begin completing the square. Move the constant term to the right: Add '-28' to each side of the equation. 28 + -21a + -28 + a2 = 0 + -28 Reorder the terms: 28 + -28 + -21a + a2 = 0 + -28 Combine like terms: 28 + -28 = 0 0 + -21a + a2 = 0 + -28 -21a + a2 = 0 + -28 Combine like terms: 0 + -28 = -28 -21a + a2 = -28 The a term is -21a. Take half its coefficient (-10.5). Square it (110.25) and add it to both sides. Add '110.25' to each side of the equation. -21a + 110.25 + a2 = -28 + 110.25 Reorder the terms: 110.25 + -21a + a2 = -28 + 110.25 Combine like terms: -28 + 110.25 = 82.25 110.25 + -21a + a2 = 82.25 Factor a perfect square on the left side: (a + -10.5)(a + -10.5) = 82.25 Calculate the square root of the right side: 9.069178574 Break this problem into two subproblems by setting (a + -10.5) equal to 9.069178574 and -9.069178574.Subproblem 1
a + -10.5 = 9.069178574 Simplifying a + -10.5 = 9.069178574 Reorder the terms: -10.5 + a = 9.069178574 Solving -10.5 + a = 9.069178574 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '10.5' to each side of the equation. -10.5 + 10.5 + a = 9.069178574 + 10.5 Combine like terms: -10.5 + 10.5 = 0.0 0.0 + a = 9.069178574 + 10.5 a = 9.069178574 + 10.5 Combine like terms: 9.069178574 + 10.5 = 19.569178574 a = 19.569178574 Simplifying a = 19.569178574Subproblem 2
a + -10.5 = -9.069178574 Simplifying a + -10.5 = -9.069178574 Reorder the terms: -10.5 + a = -9.069178574 Solving -10.5 + a = -9.069178574 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '10.5' to each side of the equation. -10.5 + 10.5 + a = -9.069178574 + 10.5 Combine like terms: -10.5 + 10.5 = 0.0 0.0 + a = -9.069178574 + 10.5 a = -9.069178574 + 10.5 Combine like terms: -9.069178574 + 10.5 = 1.430821426 a = 1.430821426 Simplifying a = 1.430821426Solution
The solution to the problem is based on the solutions from the subproblems. a = {19.569178574, 1.430821426}
| 8x(8x)+5x-7x+7x=x | | s+2(s+3)= | | 6r+2s=-2 | | x+73=25 | | 2(x+5)+6x=8x-10 | | 5(1+6x)= | | x+35=-21 | | 20-3b=2 | | s+(4s-5)= | | 16V=10U-1 | | -4x+(21+5x)=6 | | 3x+x=12.52 | | (5x-2)(x^2-4x+4)= | | 64x^6+0-1=0 | | -100+y=-161 | | 7U=1+10V | | 4(u-9)-1=-7(-3u+7)-9u | | 29r+4=n-11 | | 4.49/11.3=x/16 | | n^2+4(n+1)=64 | | -77+y=-117 | | x/2+(x-1)/4=2+x | | (4x-9)-(8x-7)= | | x-51=-79 | | 3X+5Y-31=0 | | (4x-9)-(8-7)= | | 2y-44=4(y-8) | | -10+3f=6+5f | | 10=-3+m/2 | | 0.5x+20=0.6x | | 4X-26=Y | | 0.08(x-10)=24.80 |