Question

simplify
(ii) (0.4m +0.3n)2 - (0.4m -0.3n)2​

Answer 1

Step-by-step explanation:

(0.4m+0.3n)2 - (0.4m-0.3n)2

= 0.8m+0.6n - 0.8m + 0.6n

= 0.8m-0.8m + 0.6n + 0.6n

= 1.2n

Answer 2

Given:

• Simplify: (ii) (0.4m +0.3n)2 - (0.4m -0.3n)2

To find:

• Solution of the question

Solution:

$\sf{ :\implies(0.4m + 0.3n)2 - (0.4m - 0.3n)2}$

$: \implies \sf{(0.7)2 - (0.1)2}$

$:\implies \sf{(1.4) - (0.2)}$

$:\implies \large {\underline{\boxed{\frak{1.2}}}} \: \pink{ \bigstar}$

• Hence, the answer is 1.2

Thank you!

@itzshivani