How do you find the LCM for $2r+2$ , $r^2+r$ and $r+1$ ?

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Answer 1 · 2018-05-02T05:52:03

$color(maroon)(L C M = 2r * (r + 1)$

$2r + 2 = 2 * (r + 1)$

$r^2 + r = r * (r + 1)$

$"Three terms are " 2* (r + 1), r * (r + 1), 1 * (r + 1)$

#"since " (r + 1) " is common in all the three terms",

$:. L C M = (r + 1) * 2 * r * 1 = 2r * (r + 1)$

How do you find the LCM for 2r+22r+2, r^2+rr^2+r and r+1r+1?