Question

4. If p = -2,q = -1 and r= 3, find the value of :
(b) 2p² - q² + 3r²
(d) p2 + q³ + r³ +3 pqr ​

Answer 1

Answer:

a) 24. b) 25.

Step-by-step explanation:

a). =2-2^2-1^2+3(3)^2

=2- 4 - 1 + 27

= 29-5

=24

b) = -2(2) + (-1)^3 + 3^3 + 3 ( -2 -1 + 3)

= -4 -1 + 27 + 3 ( -3 +3)

= -4 -1 + 27 + 3 (0)

= -5 + 30

= 25

Answer 2

Answer:

(1) 2 (-2)²-(-1)²+3(3)²

8-1+27

34

(2) (-2)³+(-1)³+(3)³+3(-2)(-1)(3)

-8-1+21+18

36

I hope it's help you