1.... Is this problem prime or can it be factored out more.
1. 3f^2 + 8f - 35 THX
2007-01-25 15:23:12 · 3 answers · asked by Anthon V 1 in Science & Mathematics ➔ Mathematics
First: multiply the 1st and 3rd coefficient to get "-105." Find two numbers that give you "-105" when multiplied and "8" (2nd/middle coefficient) when added/subtracted. The numbers are: "15 & -7"
Sec: rewrite the expression including the new middle coefficients...
3f^2 + 15f - 7f - 35
Third: when you have 4 terms - group "like" terms and factor both sets of parenthesis...
(3f^2 + 15f) - (7f - 35)
3f(f + 5) - 7(f + 5)
(f + 5)(3f - 7)
2007-01-25 15:40:16 · answer #1 · answered by ♪♥Annie♥♪ 6 · 0⤊ 0⤋
(3f -7 )(f+5 )
2007-01-25 15:33:44 · answer #2 · answered by bruinfan 7 · 0⤊ 1⤋
(3f-7)(f+5)
2007-01-25 15:32:12 · answer #3 · answered by Veer 3 · 0⤊ 1⤋