Question

reduceți termenii rapid

Answer 1

a)2x-5y+3x+y=

(2x+3x)+(-5y+y)=

5x-4y

$c) \sqrt{2}x - \sqrt{2}y + 2 \sqrt{2}x + \sqrt{2}y = \\ \\ \sqrt{2}x + 2 \sqrt{2}x = \\ \\ 1 \sqrt{2}x + 2 \sqrt{2}x = \\ \\ (1 + 2) \sqrt{2}x = \\ \\ 3 \sqrt{2}x$