Question

Qual e o valor da expressão (2) (2) 242424 -121212 _____________ 242424×121212 a) 1/2 b)3/4 c)1 d)3/2 e)7/4

Answer 1

Olá!

$\frac{242424^{2} - 121212^{2} }{242424 \times 121212}$

$\frac{(242424 - 121212) \times (242424 + 121212)}{242424 \times 121212}$

$\frac{121212 \times 363636}{242424 \times 121212}$

$\frac{44077046832}{242424 \times 121212}$

$\frac{181818}{121212}$

$\frac{3}{2}$

A letra correta é (D) 3/2

Bons estudos...