Question

Determinați soluțiile ecuațiilor:​

Answer 1

Răspuns:

a)√5(x+4)+2√5(x-2)=√15 /:√5

x+4+2x-4=√3

3x=√3

x=√3/3

b)x√2+2x(√8-3)=20-6x

x√2++4√2x-6x=20-6x

5√2x=20

x=4/√2=4√2/2=2√2

x=2√2

f)2(x+√2-√5)+3=x(√5-√2)

2x+2√2-2√5+3=x√5-x√2

x(2+√2-√5)=-3-2√2+2√5

x=(2√5-2√2-3)/(2+√2-√5)