Considerando:
a) y= 5x + 2
b) y= -2x
c) y= (x + 2)² - (x - 1)²
* Determine os zeros das funções;
a) y= 5x + 2
b) y= -2x
c) y= (x + 2)² - (x - 1)²
* Determine os zeros das funções;
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a) y= 5x + 2
5x + 2 = 0
5x = -2
x = -2/5
b) y= -2x
-2x = 0, x = 0
c) y= (x + 2)² - (x - 1)²
x² + 4x + 4 - x² - 2x - 1 = 0
2x + 3 = 0
2x = -3, x = -3/2