Temat:
MatematykaAutor:
vincent89Utworzono:
1 rok temu(5x - 4)² = (x+1)(x+10)
25x² - 40x + 16 = x² + 11x + 10
24x² - 51x + 6 = 0
Δ = 2601 - 576 = 2025
√Δ = √2025 = 45
x₁ = (51-45)/48 = 6/48 = 1/8
x₂ = (51+45)/48 = 96/48 = 2
x₁:
9/x - 3 = 9/(1/8) - 3 = 72 - 3 = 69
x + 1 = 1/8 + 1 = 9/8
5x - 4 = 1/8*5 - 4 = 5/8 - 4 = -27/8
x+10 = 1/8 + 10 = 81/8
Nie jest to ciąg geometryczny.
x₂:
9/2 - 3 = 3/2
x + 1 = 2 + 1 = 3
5x - 4 = 10 - 4 = 6
x + 10 = 2 + 10 = 12
Jest to ciąg geometryczny (q = 2)
Autor:
faithespinoza
Oceń odpowiedź:
3