Question

IF p=2 q=1 and r3 find the value of 2p2-q2+3r2​

Answer 1

Answer:

2×2×2-1×2+3×3×2

8-2+18

8+16

24

Answer 2

2p² - q² + 3r² = 2*2² - 1² + 3*3² = 3*4 - 1 + 3*9 = 12 - 1 + 27 = 38