Question
If (x - y) = 5, then find the value of (x³ - y³ -
15xy).Solution
We know that,
(x - y³ = x³ - y³ - 3xy(x - y)
Given, (x - y) = 5
⇒ (x - y) ³ = 5³ = 125
⇒ x³ - y³ - 3xy × 5 = 125
⇒ x³ - y³ - 15xy = 125
More Algebra Questions
What does a NIC card provide?
A 'server' is primarily used for:
Which one of the following is internet Standard Protocol?
Which of the following is used for data exchange between devices in a local area network (LAN)?
Caching ____________
A scanner is classified as which type of device?
Which of the following is known as the process of viewing cross-tab with a fixed value of one attribute?
Image can be sent over telephone lines by using -----
Who is known as the first programmer in the world?
What is the primary function of the ALU in a computer?
Relevant for Exams:
