question_answer

Add the following algebraic expression: \[5{{x}^{2}}-\frac{3}{5}x+\frac{3}{2},-\frac{7}{8}{{x}^{2}}+\frac{5}{4}x-\frac{1}{4}\,and\,-\frac{3}{4}{{x}^{2}}+\frac{1}{8}x-\frac{3}{16}\]

A) \[\frac{1}{80}\left[ 135{{x}^{2}}+62x+35 \right]\]          

B) \[\frac{1}{40}\left[ 135{{x}^{2}}+31x+42 \right]\]

C) \[\frac{1}{80}\left[ 270{{x}^{2}}+62x+85 \right]\]

D) \[\frac{1}{40}\left[ 125{{x}^{2}}+62x+38 \right]\]

E) None of these