Question

Please share the answer with steps

Answer 1

Answer:

(5.0 + 0.2)²

(a+b)² = a²+ b²+2ab

= (5.0)²+ (0.2)²+2(5.0)(0.2)

= 2.5 + 0.4 +0.2

= 3.1

Answer 2

TO FIND :- (5.2)²

WE CAN WRITE IT AS:- (5+0.2)²

*NOW WE CAN USE THE IDENTITY:

(a+b) ²= a²+b²+2ab

IN THIS CASE:- a=5, b=0.2

_________________

NOW SOLVING THE QUESTION:-

(a+b) ²=a²+b²+2ab

======>(5)²+(0.2)²+2*5*0.2

======>25+0.04+2

====>27.04 is the answer...