The Total solution for NCERT class 6-12
F (x) = (x тАУ a)2(x тАУ b)2
Let us find f (a + b).
We have,
f (a + b) = (a + b тАУ a)2 (a+ b тАУ b)2
f (a + b) = (b)2 (a)2
тИ┤ f(a + b) = a2b2