Решение
<span>xn=5n+1
x</span>₁ = 5*1 + 1 = 6
x₂ = 5*2 + 1 = 11
x₃ = 5*3 + 1 = 16
x₄ = 5*4 + 1 = 21
x₅ = 5*5 + 1 = 26
x₆ = 5*6 + 1 = 31
x₇ = 5*7 + 1 = 36
x₈ = 5*8 + 1 = 41
x₉ = 5*9 + 1 = 46
x₁₀ = 5*10 + 1 = 51
125c³ - 300c²d² + 240cd⁴ - 64d⁶ = (5c - 4d²)³
289b⁴ + 25c⁶ + 170b²c³
x² + y² = (x + y)² - 2xy = (- 2,5)² - 2(- 3,5) = 6,25 + 7 = 13,25
у²-2у+1=(у-1)²
(101-1)²=10000 (-11-1)²=(-12)²=144 (0,6-1)²=(-0,4)²=0,16
4х²-20х+25=(2х-5)²
(12,5*2-5)²=20²=400 (0*2-5)²=(-5)²=25 (-2*2-5)²=(-9)²=81