Question

how does the flow of acid rain into a river difficult
$a { }^{2} + b {}^{2} =$
हाउ टू ए स्क्वायर प्लस बी स्क्वायर ​

Answer 1

Answer:

written down

Step-by-step explanation:

(a+b)^2 = a^2 + b^2 +2ab

so, a^2 + b^2 = (a+b)^2 - 2ab

or (a-b) ^2 = a^2 + b^2 -2ab

so, a^2 + b^2 = (a-b)^2 +2ab

I hope it is useful for you.