Question

Use the identity and find the square of 189. (a – b)2 = a2 – 2ab + b2
.

Answer 1

Answer:

35721

Step-by-step explanation:

(190-1)$(190-1)^{2} \\=190^{2} +1-380\\=38101-380\\=35721$Mark it as the brainliest

Answer 2

Answer:

$189^{2}$

$(200-11)^{2}$

$a=200, b=11$

$(200)^{2} - 2(200)(11)+(11)^{2}$

$40000-4400+121$

$35721$