Question

1) O valor da expressão (a+b)ao quadrado,sobre a(ao quadrado)+b(ao quadrado) para a= 1 sobre e b=2 sobre 3 e igual a;



5) Resolva a equação X vezes (1-x)=1 sobre 4..
Me ajuda PVF!!!

Answer 1

1) (1 + 2)² / 1² + 2² = 3²/1 + 4 = 9/5
5)x(1-x) = 1/4 =  - x² + x - 1/4 = 0
a = -1
b = 1
c = -1/4
Δ = 1² - 4 * -1 * -1/4 = 1 - 1 * 0.25 = 0.75
x' = (1 + √0.75)/2
x"= (1 - √0.75)/2

Answer 2

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