Question

9. Calculează, folosind formula potrivită:
a) (2x - 1);
b) (2x + 3);
c) (4x + 1);
d) (2x - 1)(2x + 1);
e) (3x + 2)(3x - 2);
f) (x - 3)2;
g) (xV2 - 1);
h) (2x + 2)2​

Answer 1

Răspuns:

a) 4x^2-4x+1

b)4x^2+12x+9

c)16x^2+8x+1

d) 4x^2-1

e)9x^2-4

f)X^2-6x+9

g)2x-2xV2+1

h)4x^2+8x+4