793 Вправа 793Алгебра 8 клас Бевз 2025 · § 16 · стор. 152

793. Спрости вираз.

а) ${\displaystyle 2\sqrt{a}+3\sqrt{a}-4\sqrt{a}=}$${\displaystyle (2+3-4)\sqrt{a}=}$${\displaystyle \sqrt{a}}$;

б) ${\displaystyle 2\sqrt{x}+\sqrt{x}-5\sqrt{x}=}$${\displaystyle (2+1-5)\sqrt{x}=}$${\displaystyle -2\sqrt{x}}$;

в) ${\displaystyle \sqrt{25a}-\sqrt{64a}+\sqrt{9a}}$=

=${\displaystyle 5\sqrt{a}-8\sqrt{a}+3\sqrt{a}=}$${\displaystyle 0}$;

г) ${\displaystyle 9\sqrt{p}-\sqrt{9p}+\sqrt{16p}}$=

=${\displaystyle 9\sqrt{p}-3\sqrt{p}+4\sqrt{p}=}$${\displaystyle 10\sqrt{p}}$.