Question

2. Without actual multiplication, find the squares of the following
a. 75
b. 95
c 65
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Answer 1

(70+5)^2

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

=140+700+25

=865

(95)^2

=(90+5)^2

=(90)^2+2*90*5+(5)^2

=8100+900+25

=9025

(65)^2

=(60+5)^2

=(60)^2+2*60*5+(5)^2

=3600+600+25

=4225

Answer 2

Answer:

a.5625

b.9025

c.4225

Step-by-step explanation:

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