Question

Calcule a soma (S) e o produto (P) das equações:
A) x2 - 5x + 6 = 0
B) x2 - 6x + 5 = 0
C) x2 -12x + 32 = 0

Answer 1

a)

S = - b / 2a

S = - (-5) / 2.1

S = 5 / 2

P = c / a

P = 6 / 1

P = 6

b)

S = - (-6) / 2.1

S = 6 / 2

S = 3

P = 5 / 1

P = 5

c)

S = - (-12) / 2.1

S = 12 / 2

S = 6

P = 32 / 1

P = 32

Answer 2

A) x2 - 5x + 6 = 0

a=1

b=-5

c=6

x'+x=-b/a

x'+x"=-(-5)/1

x'+x"=5/1

x'+x"=5

__

x'.x"=c/a

x'.x"=6/1

x'.x"=6

B) x2 - 6x + 5 = 0

a=1

b=-6

c=5

x'+x"=-b/a

x'+x"=-(-6)/1

x'+x"=6/1

x'+x"=6

__

x'.x"=c/a

x'.x"=5/1

x'.x"=5

C) x2 -12x + 32 = 0

a=1

b=-12

c=32

x'+x"=-b/a

x'+x"=-(-12)/1

x'+x"=12/1

x'+x"=12

____

x'.x"=c/a

x'.x"= 32/1

x'.x"=32

____

Espero ter ajudado!