a fost răspuns

1) a) (x-4)(x+4)
b) (5+x) (5-x)
c) (2 radical 5 - radical 3) (2 radical 5+radical 3)
2) 8 ori (x+3)
b) (-2)ori (4+x)
c) 5 ori (-10+x)
d) -6 ori (2x+4y)
e) -3ori (7x-5)
f) 4 ori (-x+14y)
g) 7 ori (2x-9y)
h) -9 (-5x+3))

Răspuns :

Ciocooooo111111id

[tex]a) {x}^{2} - {4}^{2} = {x}^{2} - 16 \\ b) {5}^{2} - {x}^{2} = 25 - {x }^{2} \\ c) {(2 \sqrt{5}) }^{2} - {( \sqrt{3} )}^{2} = 20 - 3 = 17 \\ [/tex]

[tex]2)a)8x + 24 \\ b) - 8 - 2x \\ c) - 50 + 5x [/tex]

[tex]d) - 12x - 24y = - 12(x + 2y) \\ e) - 21x + 15 \\ f) - 4x +56y \\ g)14x - 63y [/tex]

[tex]h)45x + - 27 [/tex]