Question

Give proper answer on a paper then send and don't spam otherwise I will report.​

Answer 1

Step-by-step explanation:

$\sf{q^2 - 10q + 21 = q^2 - 3q - 7q + 21 = q(q - 3) - 7(q - 3)}$

$\sf{(q - 3)(q - 7)is\:your\:answer}$