A variable in mathematics is a symbol that is used in place of a value. The value of a variable depends on the other values in the expression or equation. As a result, the variable can at times change accordingly. Variables can be letters, Greek symbols or combinations of many other symbols.
In mathematics, a polynomial is an expression consisting of variables (also called indeterminates) and coefficients, that involves only the operations of addition, subtraction, multiplication, and non-negative integer exponents of variables. An example of a polynomial of a single indeterminate x is x2 − 4x + 7.
Power (physics) In physics, power is the rate of doing work per unit time. It is the amount of energy consumed per unit time. Having no direction, it is a scalar quantity. In the SI system, the unit of power is the joule per second (J/s), known as the watt in honour of James Watt, the eighteenth-century developer of the steam engine.
Solving Radical Equations. How to solve equations with square roots, cube roots, etc. Radical Equations : A Radical Equation is an equation with a square root or cube root, etc. Solving Radical Equations. We can get rid of a square root by squaring. (Or cube roots by cubing, etc) But Warning: this can sometimes create "solutions" which don't actually work when we put them into the original ...
General Form of Equation of a Line. The "General Form" of the equation of a straight line is: Ax + By + C = 0. A or B can be zero, but not both at the same time. The General Form is not always the most useful form, and you may prefer to use: The Slope-Intercept Form of the equation of a straight line: