the sine of a sum formula 3 videos
-
Sum of Digits
Algebra Word Problems Using Systems of Equations
How to solve a problem when asked to switch the digits of a 2-digit number.
sum digits word problem -
The Quadratic Formula
Algebra Quadratic Equations and Functions
How to use the quadratic formula to solve quadratic equations.
quadratic equation quadratic formula coefficient standard form -
Additive and Multiplicative Inverses
Algebra Pre-Algebra
How to find additive and multiplicative inverses.
additive inverse multiplicative inverse product sum
