-4x^2+25x-45=0

Simple and best practice solution for -4x^2+25x-45=0 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 -4x^2+25x-45=0 equation:


Simplifying
-4x2 + 25x + -45 = 0

Reorder the terms:
-45 + 25x + -4x2 = 0

Solving
-45 + 25x + -4x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-4 the coefficient of the squared term: 

Divide each side by '-4'.
11.25 + -6.25x + x2 = 0

Move the constant term to the right:

Add '-11.25' to each side of the equation.
11.25 + -6.25x + -11.25 + x2 = 0 + -11.25

Reorder the terms:
11.25 + -11.25 + -6.25x + x2 = 0 + -11.25

Combine like terms: 11.25 + -11.25 = 0.00
0.00 + -6.25x + x2 = 0 + -11.25
-6.25x + x2 = 0 + -11.25

Combine like terms: 0 + -11.25 = -11.25
-6.25x + x2 = -11.25

The x term is -6.25x.  Take half its coefficient (-3.125).
Square it (9.765625) and add it to both sides.

Add '9.765625' to each side of the equation.
-6.25x + 9.765625 + x2 = -11.25 + 9.765625

Reorder the terms:
9.765625 + -6.25x + x2 = -11.25 + 9.765625

Combine like terms: -11.25 + 9.765625 = -1.484375
9.765625 + -6.25x + x2 = -1.484375

Factor a perfect square on the left side:
(x + -3.125)(x + -3.125) = -1.484375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| log(2)*(2x-7)=5 | | 180-115= | | g(x)=x-6x+9 | | 5a+15=4a+12 | | 1x-2=2x | | 12x+32-9=12x-16+39 | | 8x-2-7x+5=0 | | -2[-5-2(-5-6)]= | | h(x)=x(2-3) | | 7r^2-12r=4 | | 8w+12=6w+26 | | -7.3+14.25=-9.8n | | 19=6r+7-4r | | 6(4x-9)=6(-7x-4) | | (x+10)2+(y-4)2=19 | | 4(x^3-10x-20)=0 | | ((x^2)-4)=0 | | g(x)=-1(x+1) | | 2m+5(-6m-5)=4m-25 | | -8p+5p-14=-2 | | 2(v-6)= | | 8x^2-x+5y^2+6y=0 | | 4(v-2)-3v= | | 9.57+8.1m=8.25+7.9m | | 9(4x+6)=9(6x+3) | | 10x-3+2x=33 | | 3(y-1)+6= | | 2x^3-30=4x^2 | | 7x+2=-72 | | (lnx-1)(lnx+1)=0 | | f(x)=-2x^3-6x^2-4x | | -5(3-8x)=-15+7x |

Equations solver categories