4b^2+8b+7=0

Simple and best practice solution for 4b^2+8b+7=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 4b^2+8b+7=0 equation:


Simplifying
4b2 + 8b + 7 = 0

Reorder the terms:
7 + 8b + 4b2 = 0

Solving
7 + 8b + 4b2 = 0

Solving for variable 'b'.

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

Divide each side by '4'.
1.75 + 2b + b2 = 0

Move the constant term to the right:

Add '-1.75' to each side of the equation.
1.75 + 2b + -1.75 + b2 = 0 + -1.75

Reorder the terms:
1.75 + -1.75 + 2b + b2 = 0 + -1.75

Combine like terms: 1.75 + -1.75 = 0.00
0.00 + 2b + b2 = 0 + -1.75
2b + b2 = 0 + -1.75

Combine like terms: 0 + -1.75 = -1.75
2b + b2 = -1.75

The b term is 2b.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2b + 1 + b2 = -1.75 + 1

Reorder the terms:
1 + 2b + b2 = -1.75 + 1

Combine like terms: -1.75 + 1 = -0.75
1 + 2b + b2 = -0.75

Factor a perfect square on the left side:
(b + 1)(b + 1) = -0.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| -8+x/5=12 | | 15=c/3-2 | | 7(m-4)=7m-3 | | 5x+15+8x+9=180 | | 18s^3-39s^2+20s=0 | | c^2=40 | | b+7=6 | | 4.5x^2+38x+31.875=0 | | V=2x+20t | | 0.92+2=y-0.4 | | 6x+(-2)+2x+4x= | | 5x-(6x+8)=x-11 | | 4x-32+8x-10=90 | | 6-2(3x-4)=2 | | 2x^2-10x-299=0 | | -8v-16=8v+16 | | a+9=1 | | B=70+(10+8)w | | x+2x+5+10= | | -4c-7d+8c+6d= | | 8x-(5x+6)=6 | | 3s^2-14s+8=0 | | 4rt^2+28rt+40r= | | 3-7x+4=-4 | | -3(4w-1)=18 | | 2r+6.2-2.6r+0.9r+3= | | .25y+27=41 | | 1(1-2r)=-5(2r-1) | | 2.5*3c= | | 5+15=-2(9x-10) | | 3x^2-18x=-9 | | -(-2y+4)+9y= |

Equations solver categories