a^(7)+ab^(6)

If a+ b = 7 and ab= 6, find a^(2) - b^(2)

Write the numerical coefficient of each term of the following algebraic expressions: x^(2)-7x^(2)y+5xy^(2)-2-2a^(3)+7ab^(2)-6ab+8

If x=2a^(2)+3b^(2)-5ab, y=b^(2)-3a^(2)+7ab and z=6a^(2)-b^(2)+ab , find: x+y-z

If x=2a^(2)+3b^(2)-5ab, y=b^(2)-3a^(2)+7ab and z=6a^(2)-b^(2)+ab , find: x-y+z

Factorise the following : 3a^(2)+7ab -6b^(2)

Find the product: (- 7/3 ab^3) xx (6/5 a^3 b) .

If a^(7)=7,777 and (a^(6))/(b)=11 , what is the value of ab?

Let A= {:[( 3,7),( 2,5) ]:} and B = {:[( 6,8),( 7,9) ]:} .Verify that (AB) ^(-1) =B^(-1) A^(-1)