maths.free › Algebra › Solving Linear Equations › Introduction to Solving Linear Equations
Introduction to Solving Linear Equations
Introduction to Solving Linear Equations — from OpenStax Prealgebra 2e.
Introduction to Solving Linear Equations
Teetering high above the floor, this amazing mobile remains aloft thanks to its carefully balanced mass. Any shift in either direction could cause the mobile to become lopsided, or even crash downward. In this chapter, we will solve equations by keeping quantities on both sides of an equal sign in perfect balance.
Teraz ty Žiadna kalkulačka túto rovnicu nevyrieši, ale jej časti sú vypočítateľné.Skúste niektorú z nižšie uvedených, alebo napíšte vlastnú.
Bezplatný účet pridáva poznámky ku každej lekcii, záznam o tom, čo ste dokončili, vaše vyriešené problémy na jednom mieste, a učiteľa, ktorého sa môžete opýtať na túto stránku.Math samotná je otvorená pre každého, prihlásený alebo nie.
Zaregistrovať sa PrihlásenieSymboly použité tu
Ťuknutím na ľubovoľný symbol zobrazíte úplnú definíciu, obrázok a význam každého písmena.
Otázky, ktoré ľudia kladú
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.
Časti tejto stránky sú upravené z OpenStax Prealgebra 2e (CC BY-NC-SA 4.0). Tu sú zhrnuté a znovu vysvetlené; chyby sú naše.
Viac v kategórii Algebra
Linear equationsQuadratic equationsSystems of equationsInequalitiesFactoringExpandingSimplifying expressionsFunctions and graphsExponential and logarithmic equationsPolynomial equationsAbsolute value