Question

Achar os zeros da função
a)y=2x-84
b)y=5x-250
c)y=-2x-180
d)y=-7x+47 
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Answer 1

✔OLÁ!!!

A) y = 2x - 84

0 = 2x - 84

- 2x = - 84 .(-1)

2x = 84

x = 84/2

x = 42

B) y = 5x - 250

0 = 5x - 250

- 5x = - 250 .(-1)

5x = 250

x = 250/5

x = 50

C) y = - 2x - 180

0 = - 2x - 180

2x = - 180

x = - 180/2

x = - 90

D) y = - 7x + 47

0 = - 7x + 47

7x = 47

x = 47/7