Math, asked by sah706637, 8 months ago

4. If p= -2,9=-1 and r= 3, find the value of :
(a) p² +q2 -r2
(b) 2p² ‐ q² 3r2
(d) p + q' + r3 +3 par (e) 3p²q + 5 pq² +2 pqr
(c) p-q-r

Answers

Answered by kdjain613538
0

Step-by-step explanation:

just put the values in each equation

(a) p² +q² -r²

(-2)²+(-1)²-(3)²

4 +1-9

5-9

-4

(b) 2p² ‐ q² 3r²

2(-2)²-(-1)²3(3)²

2(4) -(1)3(9)

8-27

-19

(c) p-q-r

-2-(-1)-3

-2+1-3

-1-3

-4

(d) p + q' + r3 +3 par

-2+(-1)+(3)³+3

-2-1+27+3

-3+29

26

(e) 3p²q + 5 pq² +2 pqr

3(-2)²(-1)+5(-2)(-1)²+2(-2)(-1)(3)

3(4)(-1)+5(-2)(1)+2(-2)(-3)

-12-10+12

0-10

-10

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