Question

necesito las respuestas de estas, please

Answer 1

Respuesta: (reemplazamos )

$1: 3^{2} - 2(3)(4)+4^{2} =9-24+16= 31\\\\2: \frac{1}{3} ^{2} + 2(\frac{1}{3} )(\frac{1}{2} )+ \frac{1\sqrx}{2}^{2} =\frac{2}{3} +\frac{15}{6}+ \frac{2}{2} = \frac{57}{18} + \frac{2}{2} = \frac{150}{36} \\\\3: \frac{3}{\frac{1}{3} } + \frac{4}{\frac{1}{2} } = \frac{3}{3} + \frac{2}{4} = \frac{12+6}{12} =\frac{18}{12}\\\\4: \frac{\frac{1}{3} }{\frac{1}{2} } - \frac{6}{\frac{1}{2} } + 2= \frac{2}{3} - \frac{2}{6} - 2= \frac{6}{18} - 2= \frac{30}{18}$

Explicación paso a paso:

espero te ayude :3