asked 177k views
5 votes
A rectangle has an area of xcubed - 25. Use factorization to write expressions for the possible rectangle dimensions.

1 Answer

2 votes

Final Answer:

The possible rectangle dimensions are (x - 5) and (x + 5).

Explanation:

To find the dimensions of the rectangle, we need to factorize the given expression, x³ - 25. This expression can be expressed as a difference of cubes, where x³ - 25 is equivalent to (x - 5)(x² + 5x + 25). The dimensions of the rectangle are determined by the factors, (x - 5) and (x² + 5x + 25). The factor (x - 5) represents one dimension, while (x² + 5x + 25) represents the other. Therefore, the possible rectangle dimensions are (x - 5) and (x + 5).

In the factorization process, we recognize the pattern of a difference of cubes, where a³ - b³ can be factored as (a - b)(a² + ab + b²). Here, x³ - 25 is treated as (x)³ - (5)³, leading to the factorization (x - 5)(x² + 5x + 25).

The dimension (x - 5) corresponds to one side of the rectangle, and the quadratic factor (x² + 5x + 25) relates to the other side. Consequently, the dimensions of the rectangle are (x - 5) and (x + 5), reflecting the factors obtained from the factorization of the given expression.

answered
User Moses Toh
by
8.2k points

Related questions

asked Feb 19, 2016 130k views
Suselrd asked Feb 19, 2016
by Suselrd
8.2k points
2 answers
1 vote
130k views
asked Jul 5, 2018 224k views
Arruda asked Jul 5, 2018
by Arruda
7.7k points
2 answers
4 votes
224k views
Welcome to Qamnty — a place to ask, share, and grow together. Join our community and get real answers from real people.