x(7-x)=25

Simple and best practice solution for x(7-x)=25 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for x(7-x)=25 equation:


Simplifying
x(7 + -1x) = 25
(7 * x + -1x * x) = 25
(7x + -1x2) = 25

Solving
7x + -1x2 = 25

Solving for variable 'x'.

Reorder the terms:
-25 + 7x + -1x2 = 25 + -25

Combine like terms: 25 + -25 = 0
-25 + 7x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
25 + -7x + x2 = 0

Move the constant term to the right:

Add '-25' to each side of the equation.
25 + -7x + -25 + x2 = 0 + -25

Reorder the terms:
25 + -25 + -7x + x2 = 0 + -25

Combine like terms: 25 + -25 = 0
0 + -7x + x2 = 0 + -25
-7x + x2 = 0 + -25

Combine like terms: 0 + -25 = -25
-7x + x2 = -25

The x term is -7x.  Take half its coefficient (-3.5).
Square it (12.25) and add it to both sides.

Add '12.25' to each side of the equation.
-7x + 12.25 + x2 = -25 + 12.25

Reorder the terms:
12.25 + -7x + x2 = -25 + 12.25

Combine like terms: -25 + 12.25 = -12.75
12.25 + -7x + x2 = -12.75

Factor a perfect square on the left side:
(x + -3.5)(x + -3.5) = -12.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 0=x(5x-2)(x^2+1) | | XY^2=4 | | 104+76+104+10x-4= | | x=y-4fory | | 3x+6=222 | | m+8.25=15 | | 2x^3-9x^2-10=0 | | 3p+1=1 | | 4=.25(w-4.3) | | 34-5x+2(x-2)=1 | | 3c+9=9c-9 | | 4xy+sy=9 | | 90+90+16x-6+15x= | | s+1=2 | | 3(2b+1)+2(2b+4)= | | 3p+l=l | | 5(5k-5)=32+6k | | x-27+x+13+42=180 | | 6x+19=3x+67 | | -6x-3(-3-2x)=-2 | | 5x=7x-24 | | 7sinx=3.1 | | 25x+1+76+104+104= | | 7t(2t+5)-3t(3t+1)= | | 6n+32=-7(1-3n) | | 6t-131=685 | | -5x+14=x-10 | | (24+18+24+18)8+2(24*18)= | | 56v-36v+6(5-6v)=10v+36(23-27)+18v | | a(5-x)=bx-8 | | 5-10x=25 | | 4-(5-4)+(9-19)= |

Equations solver categories