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Rios1947
@Rios1947
April 2020
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Resolva as equaçãos de segundo grau,sendo U=IR:
X² - 7X=0
X² + 5X=0
4X² - 9X=0
3X²+ 5X=0
4X² -12X=0
5X²+X=0
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MATHSPHIS
Verified answer
A) X² - 7X=0
X(X-7)=0 S={0,7}
b) X² + 5X=0
X(X+5)=0 S={0,-5}
c) 4X² - 9X=0
X(4X - 9)=0 S={0, 9/4}
d) 3X²+ 5X=0
X(3X+5)=0 S={0,-5/3}
e) 4X² -12X=0
4X(X-3)=0 S={0,3}
f) 5X²+X=0
X(5X+1)=0 S={0,-1/5}
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rios1947
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Verified answer
A) X² - 7X=0X(X-7)=0 S={0,7}
b) X² + 5X=0
X(X+5)=0 S={0,-5}
c) 4X² - 9X=0
X(4X - 9)=0 S={0, 9/4}
d) 3X²+ 5X=0
X(3X+5)=0 S={0,-5/3}
e) 4X² -12X=0
4X(X-3)=0 S={0,3}
f) 5X²+X=0
X(5X+1)=0 S={0,-1/5}