Question

4x^25? this is the last question

Answer 1

Do you mean \((4x)^{25}\)?

Answer 2

no i meant 4x^2-25

Answer 3

4x^2-25

(2x)^2-25

(2x)^2-5^2

(2x-5)(2x+5)

So 4x^2-25 completely factors to (2x-5)(2x+5)

Answer 4

oh haha that was easy thanks so much :)

Answer 5

you're welcome

Answer 6

wait one more lol x^2-1

Answer 7

x^2-1

x^2-1^2

(x-1)(x+1)

Answer 8

\(\Large \color{purple}{\rightarrow x^2 - 1^2 }\)

\(\Large \color{purple}{\rightarrow (x + 1)(x - 1) }\)

Answer 9

So x^2-1 completely factors to (x-1)(x+1)

Answer 10

you just square both of them

Answer 11

Yes you write each term as a square (if possible)

Answer 12

Yes, in these cases.

Answer 13

Then you use the difference of squares factoring rule

Answer 14

ok thanks

Answer 15

Yes, and that rule says:

\(\Large \color{purple}{\rightarrow a^2 - b^2 = (a + b)*(a - b) }\)

Answer 16

is there any other answer..bc i dnt have that answer lol

Answer 17

which answer choices do you have?

Answer 18

never mind i got it haha...i have to do this by tonight..finals