1.

Add : \[5{{x}^{2}}-\frac{1}{3}x+\frac{5}{2},-\frac{1}{2}{{x}^{2}}+\frac{1}{2}x-\frac{1}{3}\] and \[-2{{x}^{2}}+\frac{1}{5}x-\frac{1}{6}\].

A.  \[\frac{5}{2}{{x}^{2}}+\frac{11}{30}x+2\]      
B.  \[\frac{3}{2}{{x}^{2}}+\frac{30}{11}x+3\]      
C.  \[\frac{5}{2}{{x}^{2}}+\frac{13}{30}x+1\]      
D.  \[\frac{3}{4}{{x}^{2}}+\frac{12}{11}x+5\]
Answer» B.  \[\frac{3}{2}{{x}^{2}}+\frac{30}{11}x+3\]      


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