Question

Factor u^2-9

pls helpp im taking the test rn

Answer 1

u²-9

=u²-3²

=(u+3)(u-3)

Explanation:

use formula a²-b²=(a+b)(a-b)

Answer 2

(u+3)(u-3)

Explanation:

u²-9 = u²-3²

a²-b²=(a+b)(a-b)

u²-3²=(u+3)(u-3)