Question

3. If p = -2, q = -1 and r = 3, find th
(i) p2 + q2 - r2
​

Answer 1

Step-by-step explanation:

p²+q²-r²

put p= -2 q= -1 and r=3

(-2)²+(-1)²-(3)²

4+1-9

5-9

-4