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

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

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

Divide: 25 x^3y^2\ by -15 x^2y (ii) -72 x^2y z\ by -12 x y z

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

Multiply : -8/5x^2y z^3\ b y\ -3/4x y^2z (ii) 3/(14)x^2y \ by\ 7/2x^4y

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

Multiply each of the monomial : (-3x^2y),\ (4x y^2z),\ (-x y^2z^2)a n d\ (4/5z)

Multiply -4/3x^3 by 6/7x^2y and verify your result for x=2\ a n d\ y=1.

Add: (i) x y^2+4x^2y-7x^2y-3x y^2+3\ a n d\ x^(2y)+x y^2 (ii) 5x^2+7y-6z^2,\ 4y+3x^2,9x^2+2z^2-9y\ a n d\ 2y-2x^2

Add: (i) x y^2+4x^2y-7x^2y-3x y^2+3\ a n d\ x^2y+x y^2 (ii) 5x^2+7y-6z^2,\ 4y+3x^2,9x^2+2z^2-9y\ a n d\ 2y-2x^2