Question

si a/b =7/5 calcula a²+b²​/2b²

Answer 1

Respuesta:

$\frac{a}{b} = \frac{7}{5} \\ a = 7 \\ b = 5 \\ {7}^{2} + \frac{ {5}^{2} }{2 \times {5}^{2} } = \\ 7 \times 7 + \frac{5 \times 5}{2 \times 5 \times 5} = \\ 49 + \frac{25}{20} = \\ 49 + \frac{5}{4} = \\ \frac{196 + 5}{4} = \frac{201}{4} = 50 \frac{1}{4}$