Question

1.Restrangeti:
a)x^2+2x+1
b)x^2-6x+9
c)y^2+10y+25
e)a^2+12a+36
f)4x^2-4x+1

2.Restrangeti:
a)x^2-2*x*(radical din 6)+6
b)x^2-2radical din 3x+3

Answer 1

.......................................

Answer 2

a)x² +2x+1=x²+2x+1²=(x+1)²
b)x²-6x+9=x²-6x+3²=(x-3)²
c)y²+10y+25=y²+2ori5y+5²=(y+5)²
e)a²+12a+36=a²+2 ori 6a+6²=(a+6)²
f)4x²-4x+1=(2x)²-2ori 2x+1²= (2x-1)²
2)x² -2x√6+6= x²-2 x√6+(√6)²= (x-√6)²
b)x²-2√3x+3=x²-2√3x+(√3)²=(x-√3)²
se folosesc formulele de calcul prescurtat
(a+-b)²=a²+ -2ab+b²