-2b^2+5b-35=0

Simple and best practice solution for -2b^2+5b-35=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 -2b^2+5b-35=0 equation:


Simplifying
-2b2 + 5b + -35 = 0

Reorder the terms:
-35 + 5b + -2b2 = 0

Solving
-35 + 5b + -2b2 = 0

Solving for variable 'b'.

Begin completing the square.  Divide all terms by
-2 the coefficient of the squared term: 

Divide each side by '-2'.
17.5 + -2.5b + b2 = 0

Move the constant term to the right:

Add '-17.5' to each side of the equation.
17.5 + -2.5b + -17.5 + b2 = 0 + -17.5

Reorder the terms:
17.5 + -17.5 + -2.5b + b2 = 0 + -17.5

Combine like terms: 17.5 + -17.5 = 0.0
0.0 + -2.5b + b2 = 0 + -17.5
-2.5b + b2 = 0 + -17.5

Combine like terms: 0 + -17.5 = -17.5
-2.5b + b2 = -17.5

The b term is -2.5b.  Take half its coefficient (-1.25).
Square it (1.5625) and add it to both sides.

Add '1.5625' to each side of the equation.
-2.5b + 1.5625 + b2 = -17.5 + 1.5625

Reorder the terms:
1.5625 + -2.5b + b2 = -17.5 + 1.5625

Combine like terms: -17.5 + 1.5625 = -15.9375
1.5625 + -2.5b + b2 = -15.9375

Factor a perfect square on the left side:
(b + -1.25)(b + -1.25) = -15.9375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| -8(8a+6)=-240 | | q^2-81= | | 6-8X=54-29X | | 7B+7B=0 | | 25-7w=40 | | a+x=2-ax | | 2x-3=2x-4 | | 32=10a+2 | | q^2-18q+81= | | -4(v+4)=-48 | | -35=-4x+9 | | a/12-3=3 | | 1/4(z)-2/7=5/7 | | 7.8(b)-2.14=-42.7 | | a/3+8=4 | | 7ax=2-ax | | 4x^3-24x^2+42x-22=0 | | y=-0.7x+1 | | -12=4x-8 | | 3+10x=-47 | | -11+(-14)=22 | | 30x^2-10x^3+5x^4+5x^5=0 | | 2x+2+3=2-3x-4-x | | -10=-k-k | | 30x^2+-10x^3+5x^4+5x^5=0 | | 2y-3=x+1 | | -1=5n+4 | | -1=5n*4 | | 7k=91 | | 4=13u-(-7)/-8 | | 28+28=12+9+x | | 5*n/4=3 |

Equations solver categories