Question

Cacule o valor da expressão 5√8 + √32-3√50 . *
1 ponto
(A) √2
(B) - √2
(C) 29√2
(D) -29√2​

Answer 1

$5 \sqrt{8} + \sqrt{32} - 3 \sqrt{50}$

$5 \sqrt{ {2}^{2} \times 2} + \sqrt{ {4}^{2} \times 2} - 3 \sqrt{ {5}^{2} \times 2 }$

$5 \times 2 \sqrt{2} + \sqrt{ {4}^{2}} \sqrt{2} - 3 \times 5 \sqrt{2}$

$10 \sqrt{2} + 4 \sqrt{2} - 15 \sqrt{2}$

$(10 + 4 - 15) \sqrt{2}$

$- 1 \sqrt{2}$

$- \sqrt{2}$

Letra B).