Question

find the square of the number 42 without actual multiplication​

Answer 1

Answer:

${42}^{2} = 1364$

Step-by-step explanation:

42 × 42 = 1364

Answer 2

Answer:

1764

Step-by-step explanation:

42=40+2

(40+2)(40+2)=1600+80+80+4=1764