Question

1. 2Vx + 3Vx - 5Vx
2. 5Va + 3Vb -Va +2Vb
3. Vz -3Vz +9Vz

Answer 1

Объяснение:

1. 2√x + 3√x - 5√x=0

2. 5√a + 3√b -√a +2√b=4√a+5√b

3. √z -3√z +9√z=7√z

Answer 2

   $2\sqrt{x} +3\sqrt{x} -5\sqrt{x} =(2+3-5)*\sqrt{x} =0*\sqrt{x} =0$

$2.$   $5\sqrt{a} +3\sqrt{b} -\sqrt{a} +2\sqrt{b} =(5-1)\sqrt{a}+(3+2)\sqrt{b} =4\sqrt{a}+5\sqrt{b}$

$3.$   $\sqrt{z}-3\sqrt{z}+9\sqrt{z}=(1-3+9)\sqrt{z}=7 \sqrt{z}$