Find the value of k for which a^4-7a^2b^2+kb^4.Hence for this value of k factorise the polynomial

Find the value of k for which a^4-7a^2b^2+kb^4.Hence for this value of

1.	Find the value of k for which a^4-7a^2b^2+kb^4.Hence for this value of k factorise the polynomial
Answer» Answer is 8