Question

3. If p= -2,q= -1,and r= 3,finf the value of
(i) 2p²-q²+3r²​

Answer 1

$values \: of \: p = - 2, \: q = - 1, \: r = 3 \\substitute \: p, \: q ,\: and \: r \: values \: in 2p²-q²+3r² \\ 2 {( - 2)}^{2} - {( - 1)}^{2} + 3 {(3)}^{2} \\ 2(4) - (1) + 3(9) \\ 8 - 1 + 27 = 34$

the value of 2p²-q²+3r² is 34.

Hope it helps you.

Answer 2

Answer:

Answer is 88.

Step-by-step explanation:

p = -2

q = -1

r = 3

2p²-q²+3r³

2(-2)²-(-1)²+3(3)³

2×4-1+3×27

8-1+81

88. ANS.

I HOPE IT HELPS YOU......