Question

4) Dados A = x2 – 2x + 1 e B = x2 – 1 encontre A – B.

Answer 1

A)

a= 1

b= -2

c= 1

∆=

${ - 2}^{2} - 4 \times 1 \times 1$

4 + 4 . 1 . 1

8

X'= 8 + 8 / 1

16

X''= 8-8 / 1

0

Xv= 8/1 = 8

Yv= 0/1= 0

8 +0 = 8

A) 8

B)

a= 1

b= -1

c= 0

∆=

${ - 1}^{2} + 4 \times 1 \times 0$

1 + 4

5

X'= 5 + 1 ( Vai anular então)

6

X"= 5-1= 4

6 + 4 = 10

B) 10

8 - 10 = -2