Răspuns:
a)
[tex]25 - {y}^{2} = (5- y)(5 + y)[/tex]
b)
[tex] {x}^{2} - 0.36 = (x - 0.6)(x + 0.6)[/tex]
e)
[tex] {x}^{2} + 12x + 36 = (x + 6)^{2} [/tex]
f)
[tex] {9x}^{2} - 12x + 4 = (3x - 2)^{2} [/tex]
c)
[tex] {x}^{2} - 3 = (x - \sqrt{3} )(x + \sqrt{3} )[/tex]
d)
[tex] - {16b}^{2} + 9 = (3 - 4b)(3 + 4b)[/tex]
g)
[tex] {4x}^{2} - \frac{4x}{5} + \frac{1}{25} = (2x - \frac{1}{5} )^{2} [/tex]
