Question

plz explain..step by step ​

Answer 1

a^2+b^2+2ab - a^2-b^2+ 2ab

4ab

Answer 2

Solution:-

As you (should have) learned in algebra class:

(a+b)² = a² + 2ab + b² and (a-b)² = a² - 2ab + b².

Therefore (a+b)² - (a-b)² = (a² + 2ab + b²) - (a² - 2ab + b²).

Regrouping, we have (a+b)² - (a-b)² = (a²-a²) + (2ab-(-2ab)) + (b²-b²), which simplifies to 4ab.

Thank you so much....

have a very pleasant day........