Question

Simplificati:

1. 16x^2 - 8x + 1 / 16x^2 - 1
2. 9x^2 + 6x + 1/9x^2 - 1

Answer 1

Explicație pas cu pas:

1.16x^2-8×+1=(4×-1)^2

16×^2-1=(4×+1)(4×-1)

[4×-1)^2]/[(4×+1)(4×-1)]=(4×-1)/(4×+1)

2. 9x^2+6×+1=(3×+1)^2

9×^2-1=(3×-1)(3×+1)

[(3×+1)^2]/[(3×+1)(3×-1)]=(3×+1)/(3×-1)