Question

if p=7, q=5, r=3, find the value of p2+2q2-r2​

Answer 1

Answer:hlo

Step-by-step explanation:

7(2)+2(5)2-3(2)

14+20-6

34-6

28

Answer 2

Answer: 90

Step-by-step explanation:

$p^{2} + 2q^{2} - r^{2}$

$= 7^{2} + 2\times5^{2} - 3^{2}$

$= 49 + 2\times25 - 9$

$= 49 + 50 - 9$

$= 99 -9$

$= 90$