Question

How does
t2−15
Becomes
(t−15−−√)(t+15−−√)

Answer 1

hey w8 ill write that again

Answer 2

how does \[t ^{2}-15\] becomes \[(t-\sqrt{15})(t+\sqrt{15})\]

Answer 3

it doesnt "become" it

Answer 4

\[(a+b)(a-b)=a^2+ba-ba-b^2\]\[=a^2-b^2\]
\[b^2=15 \therefore b=\sqrt{15}\] just substitute

Answer 5

i didnt get it

Answer 6

± @Blueskys

Answer 7

@UnkleRhaukus sorry about that

Answer 8

I got it thanx