Use the quadratic formula to solve.

label Mathematics
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21). Use the quadratic formula to solve.   0.3x2=1.2x+0.3

A.  The solution set is {      }.

Or

B.  The solution is ∅.

Jun 22nd, 2015

Thank you for the opportunity to help you with your question!

0.3x^2-1.2x-0.3=0

x = [1.2+-sqrt(1.44+0.36)]/0.6

=[1.2+-sqrt(1.8)]/.6 =4.236

or 

x = -0.236

the solution set is {4.236,-0.236}


Please let me know if you need any clarification. I'm always happy to answer your questions.
Jun 22nd, 2015

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