Algebra Flashcards
1
Q
What happens if there is a 0 in the denominator?
A
the expression becomes undefined.
2
Q
Factor x^2-y^2
A
(x+y)(x-y)
3
Q
Factor x^2+2xy+y^2
A
(x+y)^2
4
Q
Factor x^2-2xy+y^2
A
(x-y)^2
5
Q
After you find what x equals, what do you need to do?
A
Check the solutions for impossible solutions (ex. time can’t be negative)
6
Q
Can you multiply or divide an inequality by a negative number?
A
(inequality: #
7
Q
How do you find the digits of an expression like S^256?
A
Find the pattern, then decide where on the pattern it falls.
ex. 3, 9, 27, 81, 243, 729, 2187, 6561….
