Question

Выполните умножение ( 1/7+х)*(1/7-х)

Answer 1

(5/6 + м)(5/6 - м) = 25/36 - м^2
(к + 1,1)(к- 1,1) = к^2 - 1,21

Answer 2

$( \frac{1}{7}+x)( \frac{1}{7}-x)= \frac{1}{49}-x^2$

$( \frac{5}{6}+m)( \frac{5}{6}-m)= \frac{25}{36} -m^2$

$(k+1.1)(k-1.1)=k^2-1.21$