Question

5.
Without actually finding the square of the numbers, find the value of (31)2 – (30)2.​

Answer 1

Answer:

Step-by-step explanation:

31^2 =(30+1)^2

hence 31^2-30^2

=(30+1)^2-30^2

=30^2+2.30.1+1^2-30^2

=60+1

=61

Answer 2

Answer:

Answers is your question 61