Question

Pls can u help me with this b^2+4b -125=0

Answer 1

b2-4b=0 

Two solutions were found :

 b = 4

 b = 0

Reformatting the input :

Changes made to your input should not affect the solution:

 (1): "b2"   was replaced by   "b^2". 

Step by step solution :

Step  1  :

Step  2  :

Pulling out like terms :

 2.1     Pull out like factors :

   b2 - 4b  =   b • (b - 4) 

Equation at the end of step  2  :

b • (b - 4) = 0

Step  3  :

Theory - Roots of a product :

 3.1    A product of several terms equals zero. 

 When a product of two or more terms equals zero, then at least one of the terms must be zero. 

 We shall now solve each term = 0 separately 

 In other words, we are going to solve as many equations as there are terms in the product 

 Any solution of term = 0 solves product = 0 as well.

Solving a Single Variable Equation :

 3.2      Solve  :    b = 0 

  Solution is  b = 0

Solving a Single Variable Equation :

 3.3      Solve  :    b-4 = 0 

 Add  4  to both sides of the equation : 

                      b = 4

Two solutions were found :

 b = 4

 b = 0

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Answer 2

Question:

____________

Pls can u help me with this b^2+4b -125=0

Answer:

__________

b^2 + 4b -125 = 0

b^2 + 4b = 125

b^2 + b = 125/4

b + b = ✓125/4

2b = 5✓5/2

b = 5✓5

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