Common Alg. Equations (7) Flashcards
1
Q
Quadratics…
A
ax^2 + bx + c = 0. Factor out
2
Q
Two perfect squares
A
(x + y)^2 ; (x - y)^2
3
Q
(x+y)^2
A
x^2 + 2xy + y^2
4
Q
(x-y)^2
A
x^2 - 2xy + y^2
5
Q
ALWAYS BE ON LOOKOUT FOR
A
Difference of squares (x^2 - y^2)
6
Q
Whenever you see squared variables…
A
Treat them as quadratics and set equal to zero, as there are often multiple solutions
7
Q
Turn consecutive integers x and y where x > y into a equation…
A
x - y = 1
8
Q
Two sides of triangle are radius…
A
Isoceles
9
Q
Exponents, remember to…
A
Factor as a solving option
10
Q
Factor 3^(x+2) - 3^x
A
3^x(3^2-1)
11
Q
If a number is a multiple of another in any way when divided…
A
That number has a R of 0
12
Q
Prime numbers must be…
A
Positive.
