Question

Evaluate:
a) pq (p+3) + r for p= -2, q=5 and r = -3
​

Answer 1

Answer:

-13

Step-by-step explanation:

pq (p + 3) + r

= -2 • 5 (-2 + 3) + (-3)

= -10 (1) + (-3)

= -10 + (-3)

= -13

OR

pq (p + 3) + r

= $p^{2}$q + 3pq + r

= [$(-2)^{2}$• 5] + [3 • -2 • 5] + [-3]

= [4 • 5] + [-30] + [-3]

= 20 + [-30] + [-3]

= -13