Question

Please help

Factor 25^2-64

Answer 1

you sure you got the question right?

Answer 2

Yup thats the whole question

Answer 3

sure its not 25x^2 - 64?

Answer 4

\(25x^2-64\)

@jkbo

Answer 5

yes @Jamierox4ev3r

Answer 6

oh ok so @AonZ was right then

Answer 7

\[\huge 25^2=625\]

so we get,
\[\huge 625-64\]
and we can write this as :
\[\huge (25)^2-(8)^2\]

use \(\large a^2-b^2\) identity
and this identity states that:
\[\huge a^2-b^2=(a-b)(a+b)\]

Answer 8

can you solve it? @jkbo

Answer 9

yes thank you I found the answer can you help me with one more?

factor 15x^2 + 20x

Answer 10

@jkbo we can write this in two forms:
\[\huge 1)~~~~ x(15x+20)\]
\[\huge 2)~~~~5x(3x+4)\]

Answer 11

understood? @jkbo

Answer 12

well you would always want it it form 2 not 1

Answer 13

what? i don't understand. @AonZ

Answer 14

form 2 is more correct?

Answer 15

lol... how would you choose form 2 ? it is impossible .
because in 20x , x is in the form of 1 degree not 2 degree

How would we factorize it in 2 nd form?

Answer 16

@AonZ

Answer 17

Huh? your confusing me now?

Answer 18

lol..... can you factorize it in 2nd form
\[\huge 20x\]
can you?

Answer 19

oh, i meant when u said "we can write this in two forms" then I said number 2 is more correct

Answer 20

oh!!! all are correct

Answer 21

15x +20

Answer 22

what is this? ^^^

Answer 23

Thank you

Answer 24

I was solving the problem

Answer 25

Ohkk

Answer 26

Thank you all

Answer 27

welcome :)