Question

36 (p-q) ² - 49 (p+q)^2
​

Answer 1

Answer:

${(p - q)}^{2} = {p}^{2} + {q}^{2} - 2pq$

${(p + q)}^{2} = {p}^{2} + {q}^{2} + 2pq$

$36 {(p - q)}^{2} - 49 {(p + q)}^{2} = 36( {p}^{2} + {q}^{2} - 2pq) - 49( {p}^{2} + {q}^{2} + 2pq)$

$- 8 {p}^{2} - 8 {q}^{2} + 170pq$