Question

(e) c2 - 6c + 9 - y2​

Answer 1

$c {}^{2} - 6c + 9 - {y}^{2} \\ \\ = (c {)}^{2} - 2.c.3 + (3) {}^{2} - y {}^{2} \\ \\ = (c - 3) {}^{2} - y {}^{2} \\ \\ = (c - 3) {}^{2} - (y) {}^{2} \\ \\ = (c - 3 + y)(c - 3 - y)$

I hope this helps you.

Answer 2

Solution:

c2 - 6c + 9 - y2

=2c - 6c + 9 - y2

= - 4c + 9 - y2....Answer..