Question

$42 { }^{2} = (40 + .......) {}^{2}$
​

Answer 1

Answer:

(42)²=(40+2)²

Using (a+b)²=a²+b²+2ab

=(40)²+(2)²+2(40)(2)

=1600+4+160

=1764

Answer 2

Answer:

pls mark me as brainliest.........