ITA A MATH PROBLEM
2007-05-12 11:33:26 · 10 answers · asked by Jennifer R 1 in Science & Mathematics ➔ Mathematics
First: eliminate parenthesis - use the Foil Method.
(C)(C)+(C)(-7)+(-3)(C)+(-3)(-7)
C^2+(-7C)+(-3C) + 21
C^2 - 7C - 3C + 21
Sec: combine "like" terms in the middle.
c^2 - 10C + 21
2007-05-12 17:22:25 · answer #1 · answered by ♪♥Annie♥♪ 6 · 0⤊ 0⤋
Distributive property or FOIL (First Outside Inside Last)
C^2 - 7C -3C +21
C^2 -10C +21
2007-05-12 18:37:05 · answer #2 · answered by shanusav 2 · 0⤊ 0⤋
= C² - 7C - 3C + 21
= C² - 10C + 21
2007-05-13 07:01:38 · answer #3 · answered by Como 7 · 0⤊ 0⤋
c^2-10c+21
2007-05-12 19:13:47 · answer #4 · answered by Dave aka Spider Monkey 7 · 0⤊ 1⤋
you have to use FOIL (first, outer, inner, last)
(c-3)(c-7)
c^2 - 7c -3c +21
(then you can combine like terms: -7c and -3c)
ANSWER:
c^2 - 10c +21
2007-05-12 18:41:46 · answer #5 · answered by j93Sapphire 2 · 0⤊ 0⤋
c²-10c+21
2007-05-12 18:40:23 · answer #6 · answered by guille4ty 2 · 0⤊ 1⤋
whenever you have ...for example (x-y)(u-c)
then you have to use FOIL (first, outer, inner, last)
so...try it out. the answer is c^2 - 10c +21.
2007-05-12 18:50:57 · answer #7 · answered by tochau 5 · 0⤊ 0⤋
you may FOIL.
(c-3)(c-7)
c²-7c-3c+21
c²-10c+21
2007-05-12 18:36:04 · answer #8 · answered by Winnie 3 · 1⤊ 0⤋
(C-3)(C-7)=C^2-10C+21. answer
2007-05-12 18:53:36 · answer #9 · answered by Anonymous · 0⤊ 1⤋
(C^2)-(10C)+(21)
2007-05-12 18:36:16 · answer #10 · answered by Anonymous · 0⤊ 1⤋