Q. 1 C

# Lets express the algebraic expression given below in reduced from:

Given

But we know, , so the above expression becomes

But we know (x2 - y2) = (x + y)(x - y), so the above expression becomes,

Now cancelling the like terms, we get

= (p + q)(x - y)

By opening the brackets, we get

= p(x - y) + q(x - y)

= px - py + qx - qy

Hence

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