(a+b)(c+d)(e+f)(g+h)

3 min read Jun 16, 2024
(a+b)(c+d)(e+f)(g+h)

Expanding the Expression (a+b)(c+d)(e+f)(g+h)

The expression (a+b)(c+d)(e+f)(g+h) represents the product of four binomials. Expanding this expression involves multiplying out all the terms. While it might seem daunting at first, there's a systematic approach to solve this.

Understanding the Process

The key to expanding this expression lies in distributive property, which states: a(b+c) = ab + ac

We apply this property repeatedly to multiply each term in one binomial with every term in the other.

Step-by-Step Expansion

  1. Start with the first two binomials: (a+b)(c+d) = ac + ad + bc + bd

  2. Multiply the result with the third binomial: (ac + ad + bc + bd)(e+f) = ace + acf + ade + adf + bce + bcf + bde + bdf

  3. Finally, multiply the result with the last binomial: (ace + acf + ade + adf + bce + bcf + bde + bdf)(g+h) = aceg + aceh + acfg + acfh + adeg + adeh + adfg + adfh + bceg + bceh + bcfg + bcfh + bdeg + bdeh + bdfg + bdfh

The Final Result

The expanded form of (a+b)(c+d)(e+f)(g+h) is: aceg + aceh + acfg + acfh + adeg + adeh + adfg + adfh + bceg + bceh + bcfg + bcfh + bdeg + bdeh + bdfg + bdfh

This demonstrates that the final expression has 16 terms, each representing a unique combination of one term from each of the four original binomials.

Key Points

  • The expansion process involves applying the distributive property repeatedly.
  • The number of terms in the final expression is equal to 2^n, where n is the number of binomials.
  • This expansion can be generalized to any number of binomials.

By understanding this process, you can easily expand any product of binomials, regardless of the number of factors involved.

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