Question

can someone help eith this question

Answer 1

Answer:

x-4y

Explaination:

3(x-y)-(2x+y)

open the brackets(distribute)

-> 3x - 3y - 2x - y

Combine the like terms

->3x-2x -3y-y

= x-4y

Answer 2

EXPLANATION.

Expression is equivalent to.

⇒ 3(x - y) - (2x + y).

As we know that,

We can write equation as,

⇒ 3x - 3y - 2x - y.

⇒ 3x - 2x - 3y - y.

⇒ x - 4y.

Option [A] is correct answer.

                                                                                                                   

MORE INFORMATION.

(1) (x + y)² = x² + y² + 2xy.

(2) (x - y)² = x² + y² - 2xy.

(3) (x² - y²) = (x + y)(x - y).

(4) (x² + y²) = (x + y)² - 2xy.

(5) (x³ + y³) = (x + y)(x² - xy + y²).

(6) (x³ - y³) = (x - y)(x² + xy + y²).

(7) (x + y)³ = x³ + 3x²y + 3xy² + y³.

(8) (x - y)³ = x³ - 3x²y + 3xy² - y³.