Question

Find the square without calculating

1. 35​

Answer 1

Answer:

Therefore, the square of 35 is 1225.

Step-by-step explanation:

35)

2

=(30+5)

2

=(30)

2

+2×30×5+(5)

2

[\because\left(a+b\right)^2=a^2+2ab+b^2∵(a+b)

2

=a

2

+2ab+b

2

= 900 + 300 + 25 = 1225