Question

1. Descompuneti in factori:
a) x² + 4x + 4;
b) y² + 6y + 9;
c) x² - 8x + 16;
d) x² - 10x + 25;
e) x² + 36 - 12x;
f) 49 + y² + 14y;
!!!!!!Va rog urgent!!!!

Answer 1

Explicație pas cu pas:

a)

x² + 4x + 4 = x² + 2•x + 2² = (x + 2)²

b)

y² + 6y + 9 = y² + 2•3y + 3² = (y + 3)²

c)

x² - 8x + 16 = x² - 2•4x + 4² = (x - 4)²

d)

x² - 10x + 25 = x² - 2•5x + 5² = (x - 5)²

e)

x² + 36 - 12x = x² - 2•6x + 6² = (x - 6)²

f)

49 + y² + 14y = y² + 2•7 + 7² = (y + 7)²