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

A. The solution set is { }.

Or

B. The solution is ∅.

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}

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