Add:

2x³ – 9x² + 8, 3x² – 6x – 5, 7x³ – 10x + 1 and 3 + 2x – 5x² – 4x³

Subtract:

5a²b²c² from -7a²b²c²

Take away:

(i)

(ii)

(iii)

(iv)

(v)

Subtract 3x-4y-7z from the sum of x-3y+2z and -4x+9y-11z. 

Subtract:

(i) -5xy from 12xy

(ii) 2a² from -7a²

(iii) 2a-b from 3a-5b

(iv)

(v)

(vi)

(vii) x² - xy² + xy from x²y + xy² - xy

(viii)

If we subtract -3x²y² from x²y², then we get

Add:

3a(a-b-c), 2b (a-b + c)

State whether the statements are true (T) or false (F).

The difference of the squares of two consecutive numbers is their sum.

Add:

xy²z² + 3x²y²z–4x²yz²,-9x²y²z + 3xy²z² + x²yz²

Subtract:

2a²b²c² + 4a²b²c - 5a²bc² from -10a²b²c + 4ab²c² + 2a²bc²

Add:

3a (2b + 5c), 3c (2a + 2b)