Algebra Flashcards
(10 cards)
1
Q
Quadratic equation
A
(-b +/- sqrt(b^2-4ac))/2a
For ax^2+bx+c
2
Q
x^r * x^s
A
X^(r+s)
3
Q
x^r * y^r
A
(xy)^r
4
Q
(x^r)/(x^s)
A
x^(r-s)
5
Q
(x/y)^r
A
(X^r)/(y^r)
6
Q
(X^r)^s
A
X^rs = (X^s)^r
7
Q
X^-r
A
1/(x^r)
8
Q
X^(r/s)
A
s-root(X^r)
9
Q
What do you do when you divide across an inequality with a negative number
A
Switch the sign
10
Q
What must a perfect square have?
A
An even number of prime factors
3150 x 14 = 2x2x3x3x5x5x7x7