PDA

View Full Version : Quadratic equation word problems?


daviessv
Oct 31, 2010, 07:19 AM
2 consecuitive whole numbers are x and x + 1. When the product of these numbers is subtracted from 47 times the first number x, the answer is 360. Form an equation in x and solve it to find the two possible pairs of consecutive numbers.

Unknown008
Oct 31, 2010, 07:32 AM
Use this sentence.


When the product of these numbers is subtracted from 47 times the first number x, the answer is 360

First part:
- When the product of these numbers

What is this product?
It is x(x+1)

- 47 times the first number x
What is this? This is simply 47x

- When the product of these numbers is subtracted from 47 times the first number x
This means you have 47x - x(x+1)

- the answer is 360

This means:

47x - x(x+1) = 360

Can you solve it now?