maths.free › Algebra › The Language of Algebra › Introduction to the Language of Algebra
Introduction to the Language of Algebra
Introduction to the Language of Algebra — from OpenStax Prealgebra 2e.
Introduction to the Language of Algebra
You may not realize it, but you already use algebra every day. Perhaps you figure out how much to tip a server in a restaurant. Maybe you calculate the amount of change you should get when you pay for something. It could even be when you compare batting averages of your favorite players. You can describe the algebra you use in specific words, and follow an orderly process. In this chapter, you will explore the words used to describe algebra and start on your path to solving algebraic problems easily, both in class and in your everyday life.
Nå har du Ingen kalkulator setter opp denne, men brikkene kan brukes. Prøv en nedenfor eller skriv inn din egen.
Symboler som brukes her
Trykk på et symbol for den fulle definisjonen, et bilde og hva hver bokstav i det betyr.
Spørsmål folk stiller
What does it mean to solve an equation?
To find every value of the unknown that makes both sides equal. Each step is an operation applied to both sides that keeps the solution set the same, until the unknown stands alone.
Why do I sometimes get two answers?
A quadratic can cross the axis twice, so it can have two solutions. A degree-n polynomial has up to n. The graph shows where each one comes from.
How do I know whether to factor or use the quadratic formula?
Try factoring for a few seconds: look for two numbers that multiply to a·c and add to b. If nothing obvious appears, the discriminant b² − 4ac tells you how many real roots there are, and the formula finds them without guessing.
Deler av denne siden er tilpasset fra OpenStax Prealgebra 2e (CC BY-NC-SA 4.0). Kondensert og re-forklaret her, feil er vår.
Mer i Algebra
Linear equationsQuadratic equationsSystems of equationsInequalitiesFactoringExpandingSimplifying expressionsFunctions and graphsExponential and logarithmic equationsPolynomial equationsAbsolute value