Question

the value of (1.2)²-(0.8)²​

Answer 1

$\huge\underbrace\mathcal\pink{queStion}$

(1.2)²-(0.8)²

$\huge\underbrace\mathcal\pink{anSwer}$

Using the identity,

a² - b² = (a+b) (a-b)

(1.2)²-(0.8)² = (1.2+0.8)(1.2-0.8)

⠀⠀⠀⠀⠀⠀⠀= (2.0)(0.4)

⠀⠀⠀⠀⠀⠀⠀= 0.8 ans.