Question

((7/2)²-(16/5)²)*2-2²=?

repede pls!!​

Answer 1

Raspuns: $\large \it \red{\dfrac{1}{50} }$

$\it \Big[ \Big(\dfrac{7}{2}\Big)^{2} - \Big(\dfrac{16}{5}\Big)^{2}\Big]\cdot2-2^{2}=$

$\it \Big[ \Big(\dfrac{49}{4}\Big) - \Big(\dfrac{256}{25}\Big)\Big]\cdot 2-4=$

$\it \dfrac{49}{4}\cdot2 - \dfrac{256}{25}\cdot2-4 =$

$\it \dfrac{49}{\not4}\cdot \not 2 - \dfrac{256}{25}\cdot2-4 =$

$\it \dfrac{49}{2} - \dfrac{512}{25}-4 =$

$\it \dfrac{^{25)}49}{2} - \dfrac{^{2)}512}{25}-\dfrac{^{50)}4}{1} =$

$\it \dfrac{49 \cdot25}{50} - \dfrac{512 \cdot2}{50}-\dfrac{4 \cdot50}{50}=$

$\it \dfrac{1225-1024-200}{50} =$

$\it \red{\boxed{\it \dfrac{1}{50} }}$

Bafta multa !