Algebra 2 Q2 test Flashcards
The difference of squares is a product of
Conjugates
The conjugate of 3+2i is
3-2i
Absolute value:
Distance from zero
Modulus
Size of the clock (divide by mod and take remainder)
Linear equation
5x-9=7
Quadratic equation
x = ( -b ± √( b^2 - 4ac ) ) / ( 2a )
Absolutely eclair equation:
|5x-3| = 7
Interval notation
A set of all real numbers between two end points with no gaps
Imaginary number
i = sqrt-1
Square root property
Taking the square of a root of a variable generates +- sign
Factoring a quadratic
Breaking a quadratic into two linear ewuations
Zero product rule
If the product of xy=0 then x=0 or y=0
i^0
1
i^1
i
i^2
-1
i^3
-i
<
And
>
Or
[
Less/ more than it equal to
(
Infinity or less/ more than <,>
And
-3 <2x+3 <3
Or
X<-3 or x<3