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Sarsy
@Sarsy
December 2019
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EQUAÇÃO DO SEGUNDO GRAU FÁCIL:
R^2 - 3r - 4 = 0
^= elevando
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mykeias14
A = 1
b = -3
c = -4
∆= b²- 4•a•c
∆= (-3)² - 4•1•(-4)
∆= 9 + 16
∆= 25
x = -b ± √∆. x= -(-3) ± √25. x= 3 ± 5
----------. -----------------. ----------
2•a. 2•1. 2
3+5. 8
x'= ------- = --- = 4
2. 2
3-5. -2
x" = ------ = ---- = -1
S = {4,-1}
2. 2
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b = -3
c = -4
∆= b²- 4•a•c
∆= (-3)² - 4•1•(-4)
∆= 9 + 16
∆= 25
x = -b ± √∆. x= -(-3) ± √25. x= 3 ± 5
----------. -----------------. ----------
2•a. 2•1. 2
3+5. 8
x'= ------- = --- = 4
2. 2
3-5. -2
x" = ------ = ---- = -1
S = {4,-1}
2. 2