Question

resolva as equações
a)x²=P/3 + 18
b)x²+25=10.x
c)x²-2x=-1

Answer 1

Olá Alessa

a) 

x² = P/3 + 18

x² = (P + 54)/3 

x1 = √((P + 54)/3)
x2 = -√((P + 54)/3)

b)

x² + 25 = 10x

x² - 10x + 25 = 0

(x - 5)² = 0

x = 5 

c)

x² - 2x = -1

x² - 2x + 1 = 0

(x - 1)² = 0

x = 1

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