If-a-5b-2-10b-1-a-5b-lcm-

Question Number 201237 by mnjuly1970 last updated on 02/Dec/23

I f, a ∣ 5 b^{2} - 10 b + 1

\Rightarrow {[a, 5 b]}_{lc m} = ?

Commented by AST last updated on 02/Dec/23

l c d ?

Commented by Rasheed.Sindhi last updated on 02/Dec/23

5 a b ?

Commented by mnjuly1970 last updated on 02/Dec/23

l c m \dots

Answered by witcher3 last updated on 02/Dec/23

\Leftrightarrow \exists k \in Z ∣ 5 b (b - 10) + ka = 1

\Rightarrow \gcd (a, 5 b) = 1 \Rightarrow lcd (a, 5 b) = \frac{a . 5 b}{1} = 5 ab

Commented by AST last updated on 02/Dec/23

l c m o r l c d ?

Commented by witcher3 last updated on 02/Dec/23

we use \gcd and lcm

lcd = \gcd ?

greteset comun divisor = \gcd

lcd = \dots ?

im fench not sam notation