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vivi12322014
@vivi12322014
March 2022
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efetue as equações
(a)-ײ+4×-2
(b)5ײ+2×+3
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lolysmoreira27
Questão A:
X² - 4X + 4 + X² + 2X + 1 = 5
2X² - 2X +5 - 5 = 0
2X² - 2X = 0
X² - X = 0
X ( X - 1) = 0
X = 0
X - 1 = 0
X = 1
questão B:
4X² - 4X + 1 = X² + 10X + 25
4X² - 4X + 1 - X² - 10X - 25 = 0
3X² - 14X - 24 = 0
delta = 196 + 288 = 484 ou V484
x =( 14 +- 22 )/ 6
x = 6
x = - 8/6 = - 4/3
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X² - 4X + 4 + X² + 2X + 1 = 5
2X² - 2X +5 - 5 = 0
2X² - 2X = 0
X² - X = 0
X ( X - 1) = 0
X = 0
X - 1 = 0
X = 1
questão B:
4X² - 4X + 1 = X² + 10X + 25
4X² - 4X + 1 - X² - 10X - 25 = 0
3X² - 14X - 24 = 0
delta = 196 + 288 = 484 ou V484
x =( 14 +- 22 )/ 6
x = 6
x = - 8/6 = - 4/3