Question

Express as a perfect square and find the value: p2q2 _ 12pqr + 36r2 when p=4, q=7 and r=5​

Answer 1

Answer:

-1928

Step-by-step explanation:

4×2×7×2-12×4×7×5+36×5×2

8×7×2-48×7×5+36×5×2

56×2-48×35+36×10

112-1680+360

-1928