" 10."a^(2)+b-ab-a

Find each of the following products 1.5a (10a^(2)b - 100ab^(2))

Identify like terms in the following: 4ab, 7a, 8b, -3a^(2)b^(2), - 4ba, -50b, - 75, 15b^(2)a^(2), - 7a^(2), 45, 150a, 70ba, 10a^(2)b, - 15ab^(2), 3ba^(2), - 21a^(2), 7b^(2)a .

Simplify (5a-2b) (25a^(2)+10ab+4b^(2)_) -(2a+5b) (4a^(2)-10ab+25b^(2)).

Factorise the using the identity a ^(2) - 2 ab + b ^(2) = (a -b) ^(2). x ^(2) - 10 x + 25

If a+b+c = 10 and a^(2) + b^(2) + c^(2) = 38 , find : ab + bc + ca

Find the compounded ratio of: (a-b): (a+b) and (b^(2) + ab): (a^(2) -ab)