Question

x²-5x/3 +1 = 2x+11/3

Answer 1

x²/3 - 5x/3 + 1 = 2x/3 + 11/3 
x² - 5x + 3 = 2x + 11 
x² - 5x - 2x + 3 - 11 = 0 
x² - 7x - 8 = 0 
delta = ( -7)² - 4.1.(-8) 
delta = 49 + 32 
delta = 81 

x' = 7 + 9/2 
x' = 16/2 
x' = 8 

x'' = 7 - 9/2 
x'' = -2/2 
x'' = -1 

S = { 8, -1 }

Answer 2

Resposta:

x²-5x +1 = 2x+11

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6. 3

x²-5x+6=4x+22

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6

x²-5x+6=4x+22

x²-5x-4x+6-22=0

x²-9x-16=0

A=1 B=-9. C=-16

◇= B² -4×A×C

◇=(-9²) -4×1×(-16)

◇=81+68

◇=149

X=-B+/- raiz de ◇

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2a

X= -9 +/- raiz de 149

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2

$s{x1 = - 9 + \sqrt{149 \\ 2}$