Question

50 a va rog eo si ziceti pls cum ati calculat

Answer 1

Salut! (✿ ♡‿♡)

⌜✎⌟ Să ne reamintim !

• ( a / b )² = ( a² ) / ( b² )

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀

$\bf \bigg( \frac{2}{3} \bigg)^{2} \: + \: \frac{8}{15} = \\ \\ \\ \bf = \frac{2^{2}}{3^{2}} \: + \: \frac{8}{15} = \\ \\ \\ \bf = \frac{2 \: \times \: 2}{3 \: \times \: 3} \: + \: \frac{8}{15} = \\ \\ \\ \bf \bf = \underbrace{\bf \frac{4}{9} \: + \: \frac{8}{15} }_{\blue{\sf Numitor \: comun \: \rightarrow \: 135}}= \\ \\ \\ \bf = \frac{60 \: + \: 72}{135} = \\ \\ \\ \bf = \frac{^{\green{3)}} \not132}{ \: \: \: \: \not75} = \\ \\ \\ \red{\bf = \boxed{\bf \frac{44}{25}} \: \rightarrow \: \underline{\bf rezultat}}$

Answer 2

Răspuns:

(2/3)² + 8/15 = 4/9 + 8/15 = 20+24/45 = 44/45