Question

Factorise the expression and divide as directed:-
(m²-10m+21)÷(m-3)​

Answer 1

Answer:

(m-7)

Step-by-step explanation:

(m²-10m+21)÷(m-3)

(m²-10m+21)

= {m²-(7+3)m+21}

= m²-7m-3m+21

= m(m-7)-3(m-7)

= (m-7)(m-3)

(m²-10m+21)÷(m-3)

= {(m-7)(m-3)}÷(m-3)

= (m-7)