# X 1 3 formula

## Binomial theorem

if x^2+(1/x^2) = 34, find x^3+(1/x^3) -- MOST IMPORTANT QUESTION in Algebra

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There is an extremely complicated formula for solving cubic equations. Some calculators have this formula built in and therefore can be used to solve cubic equations. We are going to learn how these equations can be solved by factorising. Multiplying the brackets together we see that the constant term, 4, must be the number we get when we multiply a, b and c together. All the solutions a, b and c must be factors of 4 so there are not many whole numbers that we need to consider.

In elementary algebra , the binomial theorem or binomial expansion describes the algebraic expansion of powers of a binomial. These coefficients for varying n and b can be arranged to form Pascal's triangle. Binomial coefficients, as combinatorial quantities expressing the number of ways of selecting k objects out of n without replacement, were of interest to ancient Indian mathematicians. The first formulation of the binomial theorem and the table of binomial coefficients, to our knowledge, can be found in a work by Al-Karaji , quoted by Al-Samaw'al in his "al-Bahir". Isaac Newton is generally credited with the generalized binomial theorem, valid for any rational exponent. When an exponent is zero, the corresponding power expression is taken to be 1 and this multiplicative factor is often omitted from the term. This formula is also referred to as the binomial formula or the binomial identity.

The solution of this equation will give us the x value s of the point s of intersection. We can then find the y value by putting the value for x that we have found into one of the original equations. That is by calculating either f x or g x. We can see the point of intersection is 2, 3. That is:. The example shows that we can find the point of intersection in two ways. Either graphically, by drawing the two graphs in the same coordinate system, or algebraically by solving the equation such as the one in the above example.

The Binomial Theorem: Formulas page 1 of 2. Sections: The formulas, Worked examples. The Binomial Theorem is a quick way okay, it's a less slow way of expanding or multiplying out a binomial expression that has been raised to some generally inconveniently large power. The formal expression of the Binomial Theorem is as follows:. Yeah, I know; that formula never helped me much, either. And it doesn't help that different texts use different notations to mean the same thing. The parenthetical bit above has these equivalents:.

## How do you expand # (x-1)^3#?

Enter an equation along with the variable you wish to solve it for and click the Solve button. -

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Binomial formula for (a+b)3. ?3C0a3b0+3C1a2b1+3C2a1b2+3C3a0b3. Here, a =x and b=1. ?3C0x3+3C1x2?11+3C2x1?12+3C3?
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## 5 thoughts on “X 1 3 formula”

1. Louie S. says:

Applying of cube of difference formula

2. Arienne C. says:

How to Use the Calculator

3. Alicia B. says:

Easy to understand algebra lessons on DVD.

4. Marveille G. says:

x3?3x2+3x?1. Explanation: note that. (x+a)3=x3+(a+a+a)x2+(a.a+a.a+a.a)x+a3. ( x?1)3>a=?1. ?(x?1)3=x3+(?1?1?1)x2+(1+1+1)x+(?1)3.

5. Stuart M. says:

Math Scene - Equations III- Lesson 3 - Quadratic equations