Question

Help!

Answer 1

no

Answer 2

How does \[t ^{2}-15\] Becomes \[(t-\sqrt{15})(t+\sqrt{15})\]

Answer 3

hey saum
it's a matter of finding factors within an equation:
it the factors of 20 are 4x5, or 10x2 or 20x1, its just another way of writing something

Answer 4

therefore the above equation you wrote is called a quadratic equation, and comes in the form :
\[y = a x^{2} + bx + c\]

Answer 5

this can always be factored (though not always cleanly) into:
(x + something) multiplied by (x + something)

Answer 6

yours becomes this :(t−√15)(t+√15)
as when you times it out: (using FIFO rules)
it becomes t^2 -√15t +√15t - (√15)^2
=t^2 + 0t - 15
=t^2 - 15