Question

Hola frnds!!!

Plzzzz solve this.....

Evaluate the following by using identity 2

(19.9)^2​

Answer 1

Answer:792.02

Step-by-step explanation:2*(19.9)^2

=2*396.01

=792.02 ans

Answer 2

Answer:

39999

Step-by-step explanation:

I think it,s 199 not 19.9

if it,s 199 then your answer is...

$(199) {}^{2}$

we can write it as ...

$(200 - 1) {}^{2}$

therefore, using ...

$(a - b) {}^{2} = (a) {}^{2} - (b) {}^{2}$

we have,

$(200) {}^{2} - (1) {}^{2}$

$40000 - 1$

39999 is your answer