?You can use the binomial squares pattern to multiply numbers without a calculator. Say
Chapter 6, Problem 351(choose chapter or problem)
You can use the binomial squares pattern to multiply numbers without a calculator. Say you need to square 65. Think of 65 as 60 + 5 .
ⓐ Multiply (60 + 5) 2 by using the binomial squares pattern, \((a+b)^{2}=a^{2}+2 a b+b^{2}\) .
ⓑ Square 65 without using a calculator.
ⓒ Which way is easier for you? Why?
Text Transcription:
(a + b)^2 = a^2 + 2ab + b^2 .
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