skt1975
1 Answer
chelleanne
x^2-3x-10=10
Remember: FOIL
( x + 2 ) ( x - 5 ) = 10
F > First > x * x = x^2
O > Outer > -5 * x = -5x
I > Inner > 2 * x = 2x
-5x + 2x = -3x
L > Last > 2 * -5 = -10
( x + 2 ) ( x - 5 ) = 10
( x + 2 ) = 10 ( x - 5 ) = 10
x + 2 = 10 x - 5 = 10
x + 2 - 2 = 10 - 2 x - 5 + 5 = 10 + 5
x = 8 x = 15
| 13 years ago. Rating: 0 | |
Top contributors in Mathematics category
Unanswered Questions
Karen Daniels
Answers: 0
Views: 11
Rating: 0
cakhiatv247
Answers: 0
Views: 10
Rating: 0
nhat88com
Answers: 0
Views: 12
Rating: 0
868viplol
Answers: 0
Views: 9
Rating: 0
868viplol
Answers: 0
Views: 9
Rating: 0
868viplol
Answers: 0
Views: 9
Rating: 0
868viplol
Answers: 0
Views: 9
Rating: 0
net88agbnett
> More questions...
Answers: 0
Views: 12
Rating: 0