Question

Factorise: 4p2 + 9q2 + r2 - 12pq + 6qr - 4rp.

Answer 1

Answer:

Step-by-step explanation:

4p²+9q²+r²-12pq+6qr-4rp

=(2p)²+(3q)²+r²-2(2p)(3q)+2(3q)(r)-2(r)(2p)

=(-2p+3q+r)²

=(2p-3q-r)²

=(2p-3q-r)(2p-3q-r).(answer)