Question

cat e: 3√11+(2√11+9√11)-10√11

Answer 1

$3 \sqrt{11} + (2 \sqrt{11} + 9 \sqrt{11} ) - 10 \sqrt{11} \\ 3 \sqrt{11} + 11 \sqrt{11} - 10 \sqrt{11} \\ 14 \sqrt{11} - 10 \sqrt{11} \\ 4 \sqrt{11}$

Answer 2

Fie rad11 = a, ca sa-ti fie mai usor.

Avem astfel

3a+2a+9a - 10a = 14a -10a = 4a = 4rad11

sau

Metoda2: rad11(3+2+9-10) =4rad11