Question

Determine as raízes ou os zeros da função A) F (x) = -4 x -8 B) g (x) = 2x -20 C) h (x) = 8x +10
urgente gente, por favor ​

Answer 1

Resposta:

$\textsf{Leia abaixo}$

Explicação passo a passo:

$\mathsf{f(x) = -4x - 8}$

$\mathsf{-4x - 8 = 0}$

$\mathsf{-4x = 8}$

$\mathsf{x = -\dfrac{8}{4}}$

$\boxed{\boxed{\mathsf{x = -2}}}\leftarrow\textsf{letra A}$

$\mathsf{g(x) = 2x - 20}$

$\mathsf{2x - 20 = 0}$

$\mathsf{2x = 20}$

$\mathsf{x = \dfrac{20}{2}}$

$\boxed{\boxed{\mathsf{x = 10}}}\leftarrow\textsf{letra B}$

$\mathsf{h(x) = 8x + 10}$

$\mathsf{8x + 10 = 0}$

$\mathsf{8x = -10}$

$\mathsf{x = -\dfrac{10}{8}}$

$\boxed{\boxed{\mathsf{x = -\dfrac{5}{4}}}}\leftarrow\textsf{letra C}$

Answer 2

Explicação passo-a-passo:

A) f(x)= -4x-8

-4x-8=0

-4x=8 ×(-1)

4x= -8

x=-8/4

x=-2

B)g(x)=2x-20

2x-20=0

2x =20

x=20/2

x=10

C) h(x) =8x+10

8x+10=0

8x= -10

x= -10/8 :(2/2)

x= -5/4