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2-39-2-1-61-2-2-39-1-61-

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Question Number 79719 by Ell Tee last updated on 27/Jan/20
(((2.39)^2 −(1.61)^2 )/(2.39−1.61))...?
Missing \left or extra \right
Commented by MJS last updated on 27/Jan/20
((a^2 −b^2 )/(a−b))=(((a−b)(a+b))/(a−b))=a+b
a2−b2a−b=(a−b)(a+b)a−b=a+b
Answered by naka3546 last updated on 27/Jan/20
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