If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying x2 + 8x + 16 = 42 Reorder the terms: 16 + 8x + x2 = 42 Solving 16 + 8x + x2 = 42 Solving for variable 'x'. Reorder the terms: 16 + -42 + 8x + x2 = 42 + -42 Combine like terms: 16 + -42 = -26 -26 + 8x + x2 = 42 + -42 Combine like terms: 42 + -42 = 0 -26 + 8x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '26' to each side of the equation. -26 + 8x + 26 + x2 = 0 + 26 Reorder the terms: -26 + 26 + 8x + x2 = 0 + 26 Combine like terms: -26 + 26 = 0 0 + 8x + x2 = 0 + 26 8x + x2 = 0 + 26 Combine like terms: 0 + 26 = 26 8x + x2 = 26 The x term is 8x. Take half its coefficient (4). Square it (16) and add it to both sides. Add '16' to each side of the equation. 8x + 16 + x2 = 26 + 16 Reorder the terms: 16 + 8x + x2 = 26 + 16 Combine like terms: 26 + 16 = 42 16 + 8x + x2 = 42 Factor a perfect square on the left side: (x + 4)(x + 4) = 42 Calculate the square root of the right side: 6.480740698 Break this problem into two subproblems by setting (x + 4) equal to 6.480740698 and -6.480740698.Subproblem 1
x + 4 = 6.480740698 Simplifying x + 4 = 6.480740698 Reorder the terms: 4 + x = 6.480740698 Solving 4 + x = 6.480740698 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = 6.480740698 + -4 Combine like terms: 4 + -4 = 0 0 + x = 6.480740698 + -4 x = 6.480740698 + -4 Combine like terms: 6.480740698 + -4 = 2.480740698 x = 2.480740698 Simplifying x = 2.480740698Subproblem 2
x + 4 = -6.480740698 Simplifying x + 4 = -6.480740698 Reorder the terms: 4 + x = -6.480740698 Solving 4 + x = -6.480740698 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = -6.480740698 + -4 Combine like terms: 4 + -4 = 0 0 + x = -6.480740698 + -4 x = -6.480740698 + -4 Combine like terms: -6.480740698 + -4 = -10.480740698 x = -10.480740698 Simplifying x = -10.480740698Solution
The solution to the problem is based on the solutions from the subproblems. x = {2.480740698, -10.480740698}
| y=1(2.1)+34 | | 5a=-13 | | -42+7x=15(-9x-5) | | 4.56+n=7 | | 6x+3=4x+2 | | y=2+16(2.1) | | x+7+x=7 | | a+3a=336 | | -2y-4x=0 | | -25=x-8 | | -2x-x-13=-1 | | 3x+8-5x= | | 49s^3-25s=0 | | w/28+6.5=11 | | x+(4x-10)=90 | | M=9/7S+30 | | 3/7x-4=5 | | -42+7x=132-110 | | m-7=9 | | y-4(-1)=0 | | 2x-5=2x+4 | | 2(x-21)=29-3(x-3) | | 5.5x+11=0 | | 2+16x=1x+34 | | 2x+3/5=x-2/6 | | 4.3v-6=8+2.3y | | 2(x-21)=20-3(x-3) | | 2(1+6m)=2+3m | | 6=29y | | 1/6x+3/6 | | 301/40+1/10 | | 1.25/x=5/2 |