Question

fatore os trinômio e resolva as equações

a)x^2+6x+9=49

b)4y^2-4y+1=25

c)9z^2+12z+4=64​

Answer 1

Resposta:

a)

x² + 6x + 9 = 49

x² + 6x + 9 – 49

x² + 6x – 40

(x + 10) (x – 4)

b)

4y² – 4y +1 = 25

4y² – 4y +1 – 25

4y² – 4y – 24

4y(y + 2)(y – 3)

c)

9z² + 12z + 4 = 64

9z² + 12z + 4 – 64

9z² + 12z – 60

3(3z + 10) (z – 2)