Question

(½a+⅔b)²=cuál es la respuesta

Answer 1

Recuerda que:

${(x + y)}^{2} = {x}^{2} + 2xy + {y}^{2}$

...

$= {( \frac{a}{2} + \frac{2b}{3} ) }^{2} \\ = {( \frac{a}{2} )}^{2} + 2( \frac{a}{2} )( \frac{2b}{3} ) + {( \frac{2b}{3} )}^{2} \\ = \frac{ {a}^{2} }{4} + \frac{2ab}{3} + \frac{ {4b}^{2} }{9}$