Question

What would be the square root of 625 using the identity (a +b)2 = a2 + b2 + 2ab?

Answer 1

Answer:

25

Step-by-step explanation:

$\sqrt{625} =25$

$25^2=(15+10)^2=15^2+2(15)(10)+10^2$

$=225+300+100$

$=625$