SOLUTION: Using the principle of zero products how would you solve the following problems:1. (9b+5)(4b-12)=0; 2.b^2+8b+12=0. I have been trying and can not seem to get the correct answer. Ca

Algebra ->  Equations -> SOLUTION: Using the principle of zero products how would you solve the following problems:1. (9b+5)(4b-12)=0; 2.b^2+8b+12=0. I have been trying and can not seem to get the correct answer. Ca      Log On


   

Question 317098: Using the principle of zero products how would you solve the following problems:1. (9b+5)(4b-12)=0; 2.b^2+8b+12=0. I have been trying and can not seem to get the correct answer. Can you help?
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
# 1
%289b%2B5%29%284b-12%29=0 Start with the given equation

Now set each factor equal to zero:

9b%2B5=0 or 4b-12=0

Now solve for b for each factor:

b=-5%2F9 or b=3

So the solutions are b=-5%2F9 or b=3

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# 2
b%5E2%2B8b%2B12=0 Start with the given equation


%28b%2B6%29%28b%2B2%29=0 Factor the left side


Now set each factor equal to zero:
b%2B6=0 or b%2B2=0

b=-6 or b=-2 Now solve for b in each case


So the solutions are b=-6 or b=-2