# find the LCM of X2 + X -6 and X2 + 8X + 15

#### socachutney

##### New member
Find the LCM of X2 + X -6 and X2 + 8X + 15.

The X is squared.

Thanks

#### Subhotosh Khan

##### Super Moderator
Staff member
Hint:

Those two are quadratic expressions. Factorize those. - and then find LCM

#### jwpaine

##### Full Member
$$\displaystyle \L (x^2 + x - 6)$$ and $$\displaystyle \L (x^2 + 8x + 15)$$
= $$\displaystyle \L \(x-2)(x+3)$$ and $$\displaystyle \L (x+3)(x+5)$$