( x²+3)² - 19(x²+3)+84=0 pfvrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr.... Pergunta de ideia deHellerZanchii

December 2019 1 46 Report

( x²+3)² - 19(x²+3)+84=0 pfvrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr

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ivanifneves ( x²+3)² - 19(x²+3)+84=0
4
x +9- 19x²-57+84=0
4
x - 19x²+93-57=0
4
x-19x²+36=0

a = 1
b = -19
c = 36
+ _______
x= - b - V b²-4.a.c
______________
2.a
+ __________
x = - (- 19) - V-19² - 4.1.36
___________________
2.1
+ _________
x= 19 - V 361 - 144
_____________
2
+ ____
x = 19 - V217
___________
2
x¹ = 19+14,73091986265624
____________________
2
x¹ = 33,73091986265624
_________________
2
x¹ =16,8654
x² = 4,269080137343765
________________
2
x² = 2,1345

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