Question

Sa se rezolve in R urmatoarele ecuatii:
a) (x-$\sqrt{5}$)²-(x-$\sqrt{10}$)(x+$\sqrt{10}$)=(x-$\sqrt{5}$+1)²- x².
b) x($\sqrt{3}+2$)²-($\sqrt{3}-1$)²= 4(x$\sqrt{3}$-2)
AM MARE NEVOIE DE AJUTOR ! DAU COROANA ! REPEDE !!!

Answer 1

1) x²-2√5x+5-(x²-10)=x²-√5x+x-√5x+5-√5+x-√5+1-x²
x²-2√5x+5-x²+10=-2√5x+2x+6-2√5
-2√5x+2√5x-2x=6-2√5-5-10
-2x=-9-2√5     inmultim -1
2x=9+2√5
x=(9+2√5)/2

b)√ x(3+4√3+4)-(3-2√3+1)=4√3x-8
7x+4√3x-4+2√3=4√3x-8
7x+4√3x-4√3x=4-8
7x=-4
x=-4/7