Question

(1.1m-0.4)(1.1m-0.4)​

Answer 1

$Given \: (1.1m-0.4)(1.1m-0.4)$

$= (1.1m - 0.4)^{2}$

/* By algebraic identity */

$\boxed{\pink{ (a-b)^{2} = a^{2} - 2ab + b^{2} }}$

$= (1.1m)^{2} - 2\times 1.1m\times 0.4 + (0.4)^{2}$

$= 1.21m^{2} - 0.88m -0.16$

Therefore ,

$\red{ (1.1m-0.4)(1.1m-0.4) }$

$\green {= 1.21m^{2} - 0.88m -0.16}$

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