prarthnaanesh
prarthnaanesh prarthnaanesh
  • 09-08-2020
  • Mathematics
contestada

Expansion of (x + 3y)(x - y) gives

Respuesta :

wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 09-08-2020

Answer:

x^2 +2xy +3y^2

Step-by-step explanation:

(x + 3y)(x - y)

Foil

first x*x = x^2

outer x*-y = -xy

inner 3y^x = 3xy

last 3y*y = 3y^2

Add them together

x^2 -xy +3xy +3y^2

Combine like terms

x^2 +2xy +3y^2

Answer Link
boitymak
boitymak boitymak
  • 09-08-2020
(x + 3y)(x-y)
= x (x-y) + 3y (x-y)
= x^2 -xy + 3xy -3y^2
Hope you’ll understand
Answer Link

Otras preguntas

What is the purpose of a checks and balances systen?
3s+2p=85.50 4s+2p=123
There are certain questions that an interviewer is not allowed to ask you during an interview. Which of the following is an example of such a question? * A) Whi
A rectangle has a perimeter of 30cm the width of the rectangle is n cm the length of the rectangle is n+6cm What’s the value of n
Hey and help me help me help plzzzzzzzzz
Which of the following is the best example of a high-risk online behavior that could lead to sexual activity? A. Texting B. Visiting a government health-educati
In a survey of a group of people, it was found that 60 0f them have business, 45 have government jobs, 125 have farming, 27 have business only, 15 have governm
y = -3x + 3 -3x - y = -6
who was Betty Friedan
(2+6 +8+54 +...);S 12