Question

8) Calcule a raiz ou zero das funções:
A) f(x) = 2x - 6
B) f(x) = -2x + 1
C) f(x) = 6
D) f(x) = 3x + 9
E) f(x) = -2x - 4​

Answer 1

Explicação passo-a-passo:

01)

a)

$f(x) = 2x - 6$

$0 = 2x - 6$

$- 2x = - 6$

$x = \frac{ - 6}{ - 2}$

$\boxed{x = 3}$

b)

$f(x) = - 2x + 1$

$0 = - 2x + 1$

$+ 2x = + 1$

$x = \frac{1}{2}$

$\boxed{x = 0,5}$

c)

$f(x) = 6$

$\boxed{x \in\mathbb{R}}$

d)

$f(x) = 3x + 9$

$0 = 3x + 9$

$- 3x = + 9$

$x = \frac{9}{ - 3}$

$\boxed{x = - 2}$

e)

$f(x) = - 2x - 4$

$0 = - 2x - 4$

$2x = - 4$

$x = \frac{ - 4}{2}$

$\boxed{x = - 2}$

$\green{ \boxed{{\mathbb{ATT: ARMANDO}}}}$