Question

Sa se rezolve ecuatia: √(x+3)=√(6√x+2)​

Answer 1

Răspuns:

√(x+3)=√(6√x+2)|^2

x+3=6√x+2|^2

x^2+8x+3=36(x+2)

x^2+8x+3-36x+72=0

x^2-28x+72=0

• Delta=b^2-4ac
• Delta=784-288
• Delta=496.

X1=-8+√496/2

X2=-8-√496/2