Question

determine os zeros da funcoes das seguintes funcoes polinominal do 1 grau a) f ( x ) = - x +1 b) f ( x ) = -2 x + 1 c) f ( x ) = 4 x + 11 d) f ( x ) 2 x = 3 d) f ( x ) = 5 x - 4

Answer 1

a)

f ( x ) = - x + 1
0 = - x + 1
x = 1
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b)
f ( x ) = - 2 x + 1

0 = - 2x + 1
2x = 1
x = 1/2

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c)
f( x ) = 4 x + 11

0 = 4x + 11
- 11 = 4x
4x = - 11
x = - 11/4

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d)
f ( x ) = 2 x  + 3
0 = 2x + 3
- 3 = 2x
2x = - 3
x = - 3/2

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e)

f ( x ) = 5 x - 4
0 = 5x - 4
4 = 5x
5x = 4
x = 4/5

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