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MATH FACTORING QUESTION PLS HELP THANKYOU?
how do i factor these? thank you so much
1) 81x^6 - 144x^4
2) 196x^15 - 49x^13
3) 18y^2 + 21y + 5
4) 15f^2 - 46f + 3
5) 45k^2 + 21k - 24
6) 12s^2 - 8s -20
7) 24d^2 - 4d -42
8) 21w^2 + 93w + 36
4) 15f^2 - 46f + 3
5) 45k^2 + 21k -24
1 Answer
- ranjankarLv 78 years agoFavorite Answer
1) 81x^6 - 144x^4
9x^4 ( 9x^2 - 16 )
USE FORMULA a^2 - b2 = (a+b) ( a-b)
9x^4 ( 3x +4) ( 3x -4) ANSWER
2) 196x^15 - 49x^13
49x^13 ( 4x^2 - 1)
49x^13 ( 2x +1) ( 2x -1) ANSWER
3) 18y^2 + 21y + 5
18y^2 +6y +15y +5
6y ( 3y +1) +5( 3y +1)
( 6y +5) ( 3y +1) ANSWER
4) 15f^2 - 46f + 3
15f^2 -45f - f + 3
15f ( f - 3) -1 ( f-3)
(15f - 1) (f-3) ANSWER
5) 45k^2 + 21k - 24
3 ( 15k^2 + 7k - 8)
3 ( 15k^2 +15k - 8k -8 )
3 ( 15k ( k +1) -8 ( k +1) )
3 ( 15k -8) ( k +1) ANSWER
6) 12s^2 - 8s -20
4 ( 3s^2 -2s - 5 )
4 ( 3s^2 +3s - 5s -5 )
4 ( 3s ( s +1) -5( s+ 1))
4 ( 3s -5) ( s+1) ANSWER
7) 24d^2 - 4d -42
2 ( 12d^2 -2d - 21 ) ANSWER
8) 21w^2 + 93w + 36
3 ( 7w^2 + 31w + 12 )
3 ( 7w^2 + 28w +3w +12 )
3 ( 7w ( w +4) +3( w +4) )
3 ( 7w +3) ( w+4) ANSWER