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# What are special cases in linear equations?

## What are special cases in linear equations?

Special cases involving linear systems of equations The variable x can be eliminated by multiplying both sides of the first equation by 2 and then adding. Both variables were eliminated here, leaving the false statement 0 = 15, a signal that these two equations have no solutions in common.

What is the special equation?

A special system consists of two linear equations that are parallel or have an infinite number of solutions.To solve these equations, you add or subtract them and solve for the variables x and y.

### What is a special case in math?

Freebase. Special case. In logic, especially as applied in mathematics, concept A is a special case or specialization of concept B precisely if every instance of A is also an instance of B but not vice versa, or equivalently, if B is a generalization of A.

What are the special cases of factoring?

Factoring Special Cases

• Factor a perfect square trinomial.
• Factor a difference of squares.
• Factor a sum and difference of cubes.
• Factor an expression with negative or fractional exponents.

#### What are special solutions in linear algebra?

In a set of linear simultaneous equations, a unique solution exists if and only if, (a) the number of unknowns and the number of equations are equal, (b) all equations are consistent, and (c) there is no linear dependence between any two or more equations, that is, all equations are independent.

What are examples of solving equations?

Example 1: solving x -3= 0 for x gives the solution x = 3

• Example 2: solving x-5 = 0 for x gives the solution x = 5
• Example 3: solving x²-1=0 for x gives two real solutions,x = -1 and x = 1
• Example 4: solving x -y = 0 for y gives y = x.
• Example 5: solving x -y+2 = 0 for y gives the solution y = x+2.
• ## How do you solve solving equations?

Solve by Multiplication Write one equation above the other. Multiply one or both equations until one of the variables of both terms have equal coefficients. Add or subtract the equations. Solve for the remaining term. Plug the term back into the equation to find the value of the first term. Check your answer.

What is a solving equation?

In mathematics, to solve an equation is to find its solutions, which are the values (numbers, functions, sets, etc.) that fulfill the condition stated by the equation, consisting generally of two expressions related by an equality sign. Solving an equation numerically means that only numbers represented explicitly as numerals (not as an expression involving variables), are admitted as solutions.

### How do I solve rational equations?

The steps to solving a rational equation are: Find the common denominator. Multiply everything by the common denominator. Simplify. Check the answer(s) to make sure there isn’t an extraneous solution.