Respuestas
Respuesta dada por:
3
1) √y - 2 = 0
√y = 2
y = 2²
y = 4
2) √(x+1) = x-5
x+1 = (x-5)²
x+1 = x²-10x+25
0 = x²-10x+25 -x -1
x²-11x+24 = 0
(x-8)(x-3) =0
x-8 =0 x-3 =0
x1=8 x2=3
3) √(x-1) - x = -3
√(x-1) = x-3
x-1 = (x-3)²
x-1 = x²-6x+9
0 = x²-6x+9-x+1
x²-7x+10 =0
(x-5)(x-2) = 0
x-5 = 0 x-2=0
x1=5 x2 = 2
√y = 2
y = 2²
y = 4
2) √(x+1) = x-5
x+1 = (x-5)²
x+1 = x²-10x+25
0 = x²-10x+25 -x -1
x²-11x+24 = 0
(x-8)(x-3) =0
x-8 =0 x-3 =0
x1=8 x2=3
3) √(x-1) - x = -3
√(x-1) = x-3
x-1 = (x-3)²
x-1 = x²-6x+9
0 = x²-6x+9-x+1
x²-7x+10 =0
(x-5)(x-2) = 0
x-5 = 0 x-2=0
x1=5 x2 = 2
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