SOLUTION: solve the equation 121 x^2-4=0

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Question 132162: solve the equation 121 x^2-4=0
Answer by jim_thompson5910(35256) About Me  (Show Source):
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121x%5E2-4=0 Start with the given equation

%2811x%2B2%29%2811x-2%29=0 Factor the left side by using the difference of squares method



Now set each factor equal to zero:
11x%2B2=0 or 11x-2=0

x=-2%2F11 or x=2%2F11 Now solve for x in each case


So our answer is
x=-2%2F11 or x=2%2F11