Question

7. If p=30
(1) p² - 2qr
Vpq + qr + rp
3. q = -5, and r = 4, find the value of :
(ii) q- 3pr
3p9 + 10pr + 2qr
(iii) p2-pg
(vi) p q
(v) p2+q2+r2-pq-qr-pr​

Answer 1

Step-by-step explanation:

${30}^{2} = 900 - 2( - 20) = 900 + 4 = 904$

Answer 2

Answer:

30²=900 -2 (-20)

=900+4

=904

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