Question

how to solve (p²-q²)²-4p²q²​

Answer 1

Answer:

Step-by-step explanation:

p4 + q4 - 6p2q2

Answer 2

Answer:

$(p {}^{2} - q {}^{2 } ) {}^{2} - 4p {}^{2} q {}^{2} \\ = (p { {}^{2} )}^{2} + (q {}^{2} ) {}^{2} - 2 \times p {}^{2} \times q {}^{2} - 4p {}^{2} q {}^{2} \\ = p {}^{4} + q {}^{4} - 2p {}^{2} q {}^{2} - 4p {}^{2} q {}^{2} \\ = p {}^{4} + q {}^{4} - 6p {}^{4} q {}^{4}$

using identity (a-b)^2 = a^2 +b^2-2×a×b