Question

1.Without actual multiplication, find the squares of the following : (a) 75

Answer 1

Answer:

5625

Step-by-step explanation:

USING IDENTITY (a+b)^2=a^2+2ab+b^2

(75)^2=(70+5)^2

=70^2+2(70)(5)+5^2

=4900+700+25

=5625