Question

a)x^2=x+2^2+x+1^2

b)2√13^2=x^2+x+2^2

calcule o valor do x

Answer 1

a)x^2=x+2^2+x+1^2
x^2=x+4+x+1
x^2=2x+5
x^2-2x-5=0
usando fórmula de Bhaskara
x1/2=+2+-5/2 ,
<>x1=2+5/2 <> x1=7/2
x2=2-5/2 <> x2=-3/2