Answer:
Step-by-step explanation:
(x + y)² - (x - y)² = 4xy
t = a² - b²
= (√8+2)²-(√8-2)² (here, x = √8 & y = 2}
=4*√8*2
=8√8
=8√2*2*2
=8*2√2
=16√2
