Question

2.multiply and verify (iv)
I need it urgently

Answer 1

(0.1p+0.2q)(0.2q-0.1p)
=0.04q^2-0.01p^2
=0.04×25-0.01×100
=1-1=0
it should be your answer.

Answer 2

Hope it helps ...Plzz mark as brainlist