Mark every expression which appears as a factor in the complete factorization of 9x^2-25?

3 ⤊

Mark every expression which appears as a factor in the complete factorization of 9x^2-25?

a) 3x + 1
b) 3x-25
c) 3x-5
d) 3x+5
e) 9x+1
f) x-5
g) x-25
h) 9x+5

2007-04-25 09:45:20 · 3 answers · asked by Audrena S 1 in Science & Mathematics ➔ Mathematics

3 answers

9x^2-25 = (3x-5)(3x+5) so c and d

2007-04-25 09:54:02 · answer #1 · answered by whatcanmaxdo4u?everythingupscant 3 · 1⤊ 1⤋

9x^2 - 25 is the difference of two squares, so it can be factored as:
9x^2 - 25 = (3x+5) (3x - 5)

That's the lowest that you can go... so your two factors are c) and d).

2007-04-25 09:54:09 · answer #2 · answered by Claire 5 · 1⤊ 0⤋

9xÂ² - 25 =

(3x - 5)(3x + 5)

- - - - - - - - - - - -s-

2007-04-25 10:09:38 · answer #3 · answered by SAMUEL D 7 · 1⤊ 0⤋