Question

how to factor trinomials lol

Answer 1

Can you give an example of what you need to do?

Answer 2

1x2 + 8x + 15

Answer 3

so,
x^2 + 8x+15

Answer 4

First, you should know that we want the form in
(x+/- _)(x+/-_)

Answer 5

We know that 15 is a positive, so it's for sure
(x+_)(x+_), since 8x is also positive

Answer 6

We know the factors are
1, 15
3, 5

Answer 7

We need the two factors to add up to 8, so we choose 3 and 5

Answer 8

So then we get
(x+3)(x+5)
you can then use FOIL to recheck if it is correct

Answer 9

\(\color{#0cbb34}{\text{Originally Posted by}}\) @jhonyy9
\(\color{#0cbb34}{\text{Originally Posted by}}\) @snowflake0531
so,
x^2 + 8x+15
\(\color{#0cbb34}{\text{End of Quote}}\)
maybe good to know this formula

x^2 +Sx +P = 0

where S = x_1 +x_2

P = x_1 *x_2
\(\color{#0cbb34}{\text{End of Quote}}\)

Answer 10

there's a formula for this?

Answer 11

?_?

Answer 12

have you heard about Viéte formulas ?

Answer 13

No, I do the factoring by factoring lmao
I never knew there was a formula for this....

Answer 14

@AZ opinion pls ? ty

Answer 15

Its more like quadratic formula

Answer 16

If u can solve quadratic very well, i think this would be easy 4 u in no time