Find the value of   `( a + b )^2 - 2 ( a - b )^2 + ( a - b ) ( a + b )`

Find the value of ( a + b )^2 /(( a^2 - b^2 )) is

Find the value of ( a^4 - a^2*b^2 ) ÷ a^2 is ( a ) x^2( a - b )^2 ( b ) ( a + b )( a - b ) ( c ) b ( a - b ) ( d ) a ( a - b )

Find the value of - (2a+3b) (2a-3b)

Find the value of ( a^2/b^2 + b^2/a^2 ) is ( a ) ( a/b + b/a )^2 - 2 ( b ) ( a/b + b/a )^2 + 2 ( c ) ( a/b + b/a )^2 + 4 ( d ) ( a/b + b/a )^2 - 4

find the value of (a^(2)-b^(2))

Find the value of ((a+b)/(2))^(2)-((a-b)/(2))^(2)

Find the value of a^(2)+b^(2) if a+b=10anda-b=2 .

Find the value of the determinant |{:(a^2,a b, a c),( a b,b^2,b c), (a c, b c,c^2):}|