Add the following: `3x+2y\ a n d\ x+y` (ii) `x+y+3\ a n d\ 3x+2y+5` `2x+3y+z\ a n d\ 2x-y-z`

Add the following: (i) 3x+2y\ a n d\ x+y (ii) x+y+3\ a n d\ 3x+2y+5 (iii) 2x+3y+z\ a n d\ 2x-y-z

Add the following: (i) 3x\ a n d\ 7x (ii) -5x y\ a n d\ 9x y

Add the following: 3x\ a n d\ 7x (ii) -5x y\ a n d\ 9x y

Multiply: 3,15 x\ a n d-23 x^2y (ii) x , x^2y z\ a n d-3/7x y z^2

Add the following: (i) x – 3y – 2z , 5x + 7y – 8z , 3x – 2y + 5z

Add the following: (i) x – 3y – 2z , 5x + 7y – 8z , 3x – 2y + 5z

Find the greatest common factor (GCF/HCF) of the following polynomials: 7x , 21 x^2a n d\ 14 x y^2 (ii) 42 x^2y z\ a n d\ 63 x^3y^2z^3

Solve the following pair of linear equations by the elimination method and the substitution method: (i) x+y=5" "a n d" "2x 3y=4 (ii) 2x+4y=10" "a n d" "2x 2y=2 (iii) 3x 5y 4=0" "a n d" "9x=2y+7 (iv) x/2+(2y)/3=-1 and x-y/3=3

Add 2x - 3y + z , 5y - x + 7z and 3x - y - 6z.

Multiply (3x+2y)a n d\ (5x+3y)