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secondary 2 | Maths
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How do I expand those with numbers only?
Date Posted: 4 years ago
Views: 238
a) 101^2 = (100 + 1)^2
using (a+b)^2 = a^2 + 2ab + b^2
100^2 + (2*100*1) + 1^2 = 10000+200+1=10201
using (a+b)^2 = a^2 + 2ab + b^2
100^2 + (2*100*1) + 1^2 = 10000+200+1=10201
you can use (a+b)^2 = a^2 + 2ab + b^2 for part a,b,c.
you can use (a-b)^2 = a^2 - 2ab + b^2 for part d. Using a =50, b= 0.2.
you can use (a-b)^2 = a^2 - 2ab + b^2 for part d. Using a =50, b= 0.2.
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Date Posted:
4 years ago
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