Question

how do you factor 5k^2 - 245

Answer 1

factoring does not mean solve. It means break up the expression into "factors" (factors are terms that are multiplied together)

The very first step is to "factor out" a 5
can you do that ?

Answer 2

(5k+5) (k - 49) ?

Answer 3

Here is an example of factoring out 5
(5x + 10)
divide both terms by 5: 5x/5 is x
10/5 is 2
now write the 5 "outside" the parens, like this
5(x+2)
inside the parens put in 5x/5 and 10/5

notice: if you "distribute" the 5 you get (5*x + 2*5) or (5x+10)

Answer 4

for your problem
(5k^2 - 245)

you know you will have a 5 outside the parens
5( stuff)
what goes inside the parens ? divide both terms by 5 to find out.

Answer 5

5 and 49

Answer 6

almost 5k^2/5 is not 5
but -245/5 is -49

what do you get after factor out the five ?

Answer 7

5 and 1?

Answer 8

what is \[ \frac{5k^2}{5} \]?

Answer 9

i dont need help anymore haha but thanks(: