Question

Factorizati(descompuneti in factori) fiecare expresie algebraica propusa:
a)2x²-5x
b) x²-9=
c)a²-8x+16
d)4x²-9
e)25x²+20x+4
f)y²-4/9
va rog​

Answer 1

Răspuns:

a) 2x² - 5x = x(2x - 5)

b) x²-9 = (x+3)(x-3)

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

d) 4x²-9 = (2x-3)(2x+3)

e) 25x² + 20x + 4 = (5x)² + 2×2×5x + 2² = (5x + 2)²

f) y² - 4/9 = (y - 2/3)(y + 2/3)

Succes!