Question

What is the factored form of the polynomial z² − 10z + 25?

Answer 1

( z - 5 ) ( z - 5 )

Explanation:

z² − 10z + 25

= z² − 5z - 5z + 25

= z ( z - 5 ) - 5 ( z - 5 )

= ( z - 5 ) ( z - 5 )