Question

find the missing term that complete the squarez²-30z

Answer 1

Given:

The first term is, FT = z²

The middle term is, MT = -30 z

Therefore, the last term can be calculated as,

$LT=\frac{MT^2}{4FT}$

Substituting, we have,

$LT=\frac{(-30z)^2}{4\times z^2}=\frac{900}{4}=225$