## Elementary Technical Mathematics

$(y+10)(y+7)$
$y^2+17y+70$ has no common monomial factor $=(\ \ \ \ \ \ \ \ )(\ \ \ \ \ \ \ \ )$ $=(y\ \ \ \ \ \ )(y\ \ \ \ \ \ )$ $=(y+\ )(y+\ )$ All signs in the trinomial are positive. $=(y+10)(y+7)$ 10 and 7 have a sum of 17 and a product of 70.