Special Products Flashcards
1
Q
(x+y)(x-y)
A
x² - y²
2
Q
(x+y)²
A
x² + 2xy + y²
3
Q
x² + 2xy + y²
A
(x+y)²
4
Q
(x-y)²
A
x² - 2xy + y²
5
Q
x² - 2xy + y²
A
(x-y)²
6
Q
xy > 0
A
Same sign
Both positive OR both negative
7
Q
xy less than 0
A
Different signs
1 positive, 1 negative
8
Q
x² - x less than 0
A
X b/n 0 & 1
9
Q
x² - y²
A
(x+y)(x-y)
10
Q
ax = by + c
A
CANNOT provide ratio of x/y
