Question

Which equation represents:

"An unknown integer, multiplied by the unknown integer minus a different unknown integer, equals 100."

A) x2 + xy + 100 = 0
B) x2 + xy − 100 = 0
C) x2 − xy + 100 = 0
D) x2 − xy − 100 = 0

Answer 1

D

Explanation:

The first unknown integer will be x. The second one will be y.

x^2 - xy = 100

This is the same one as

x^2 - xy - 100 = 0