Question

pls anyone tell ..very urgent​

Answer 1

Answer:

$(P/7-Q/5)(P/7+Q/5)$

Step-by-step explanation:

using identity

$a^{2}-b^{2}=(a-b)(a+b)$

Answer 2

Answer:

$( \frac{p}{7 } - \frac{q}{5} ) \: ( \frac{p}{7} + \frac{q}{5} )$

Step-by-step explanation:

given equation can be written as:

(p/7)^2 - (q/5)^2 (1 )eq^n

now w.k.t :

${a}^{2} - {b}^{2} = (a - b )\: (a + b)$

assuming : p/7 = a , q/5 =b

(1) becomes: (p/7 -q/5) (p/7 + q/5)