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 + -4 = 81 Reorder the terms: -4 + 4x + x2 = 81 Solving -4 + 4x + x2 = 81 Solving for variable 'x'. Reorder the terms: -4 + -81 + 4x + x2 = 81 + -81 Combine like terms: -4 + -81 = -85 -85 + 4x + x2 = 81 + -81 Combine like terms: 81 + -81 = 0 -85 + 4x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '85' to each side of the equation. -85 + 4x + 85 + x2 = 0 + 85 Reorder the terms: -85 + 85 + 4x + x2 = 0 + 85 Combine like terms: -85 + 85 = 0 0 + 4x + x2 = 0 + 85 4x + x2 = 0 + 85 Combine like terms: 0 + 85 = 85 4x + x2 = 85 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 = 85 + 4 Reorder the terms: 4 + 4x + x2 = 85 + 4 Combine like terms: 85 + 4 = 89 4 + 4x + x2 = 89 Factor a perfect square on the left side: (x + 2)(x + 2) = 89 Calculate the square root of the right side: 9.433981132 Break this problem into two subproblems by setting (x + 2) equal to 9.433981132 and -9.433981132.Subproblem 1
x + 2 = 9.433981132 Simplifying x + 2 = 9.433981132 Reorder the terms: 2 + x = 9.433981132 Solving 2 + x = 9.433981132 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 = 9.433981132 + -2 Combine like terms: 2 + -2 = 0 0 + x = 9.433981132 + -2 x = 9.433981132 + -2 Combine like terms: 9.433981132 + -2 = 7.433981132 x = 7.433981132 Simplifying x = 7.433981132Subproblem 2
x + 2 = -9.433981132 Simplifying x + 2 = -9.433981132 Reorder the terms: 2 + x = -9.433981132 Solving 2 + x = -9.433981132 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 = -9.433981132 + -2 Combine like terms: 2 + -2 = 0 0 + x = -9.433981132 + -2 x = -9.433981132 + -2 Combine like terms: -9.433981132 + -2 = -11.433981132 x = -11.433981132 Simplifying x = -11.433981132Solution
The solution to the problem is based on the solutions from the subproblems. x = {7.433981132, -11.433981132}
| x^4+2x+1=1 | | x+(x+37)+57=180 | | x+26.8=11.9 | | 8x+2(3x-12)=-112 | | W^2-2w-14=-14 | | Log(2x-15)=2 | | x(7)-12=23 | | (7-3i)-(-2+5i)= | | (2x+2)(x+4)= | | Y=(5/6)x-4 | | 7451.5968=3.14*r^2 | | 6x-9+3x=-21 | | 152/100 | | 30=4*x | | 3(b=2)/2 | | 0.04x-6.7=-8.78 | | 112-(6x-9)=6(x+2)+x | | 20/35=x/100 | | 12*41= | | 32x^2+80xy+50y^2=0 | | 4c^3+52c^2+160c= | | 4(5x-2)=-228 | | p(-5)=4u^2+18u+9 | | C^2+20c-4=0 | | Tangent(55)=9/x | | y=2v^2-10 | | x(6x-2)=5 | | (Z+2)(z+2)=40 | | 5400n=(n-2)180 | | -2x-18=6+16X | | 25=21t^2 | | cos(x)=.15 |