Question

a) x2 - 4x - 5 = 0
b) -6x2 + 3x -4 =0
c) x2 -25 = 0​

Answer 1

Resposta:

a) x2 - 4x - 5 = 0

-2x-5=0

-2x=5

= - 5

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2

b) -6x2 + 3x -4 =0

-12x+3x-4=0

-9x-4=0

-9x=4

x= - 4

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9

c) x2 -25 = 0

2x-25=0

2x=25

x= 25

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2