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Substitution
Contributed by: Oryx

If p=2, q = 3 and r = 5 evaluate the following

expressions

(b)  4p - 3q
(d) 3p - 2q + r
(a)  3p + 2q
(c)  p - q - r
=
=
=
=

If p=2, q = 3 and r = 5 evaluate the following

expressions

(b)  2r(p - q)
(d)  4q(q - r)
(a)  q(p + q)
(c)  3p(p - 3r)
=
=
=
=

If p=2, q = 3 and r = 5 evaluate the following

expressions

(b)  q2 + r2
(d)  3r2 - 2q2
(a)  p2 + q2
(c)  2p2 - 3q2
=
=
=
=
(a)  2p + 4q
(b)  5r - 3s
(c)  3q - 4s

If p=4, q = 2, r = 3 and s = 5, evaluate the

following expressions

=
=
=
(d)  6p - 8q + 4s
(e)  3r - 3p + 5q
(f)  -p - q + r + s
=
=
=
(a)  2p - 3q - 4r + s
(b)  3s - 4p + r + q
(c)  p 2 + q2

If p=4, q = 2, r = 3 and s = 5, evaluate the

following expressions

=
=
=
(d)  r2 - s2
(e)  p(q - r + s)
(f)  r(2p - 3q)
=
=
=
(a)  2s(3p-2q)
(b)  pq + rs
(c)  2pr - 3rq

If p=4, q = 2, r = 3 and s = 5, evaluate the

following expressions

=
=
=
(d)  q3 - r2
(e)  s3 - p3
(f)  r4 - q5
=
=
=
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