Question

Add the following pairs of polynomial

Answer 1

$\frac{2}{3} {x}^{2} + x+ 1 + \frac{3}{7} {x}^{2} + \frac{1}{4}x + 5 \\ = \frac{23}{21} {x}^{2} + \frac{5}{4} x + 6$
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