Question

Giải các phương trình sau:

a.\(\sqrt{2x+\sqrt{6x+1}}=x+1\)

b.\(\sqrt{x+9}=5-\sqrt{2x+4}\)

Answer 1

bai nay kho that!

Answer 2

kho moi dag .ko kho thi dang lm j

Answer 3

a/ PT <=> 2x + \(\sqrt{6x+1}\)= x² + 2x + 1

<=> 6x + 1 = x⁴ + 2x² + 1

<=> x(x³ + 2x -6) = 0

Toi day thi don gian roi

Answer 4

con cau b thi sao

Answer 5

Ta co PT <=> 3x + 13  + \(2\sqrt{2x^2+22x+36}\)= 25

<=>  144 + 9x² - 72x = 8x² + 88x + 4×36

Toi day thi don gian roi