Question

Add the following algebraic expressions using both horizontal and vertic
you get the same answer with both methods.
07-2xy +3y2; 5y2 + 3xy – 6.x?
4a² +50+6ab ; 3ab ; 6a² - 262; 4b- 5ab
@ 2x +9y - 72 ; 3y +z + 3x ; 2x - 4y-Z
Exercise - 4
@
(w) 2.rº - 6x +3 ; -3x?-X-4 ; 1+2x - 3x?>
Simplify: 2r2 + 5x - 1+8x + x² + 7 -6x+3–3x
Find the perimeter of the following rectangle?​

Answer 1

Answer:

I don't know what is this