Difference of Squares
(a-b)(a+b) = a^2 + ab – ba – b^2
The two middle terms cancel each other out and leaves (a^2 – b^2)
Difference in this context means that you’re subtracting the two squares
Math Week 10
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(a-b)(a+b) = a^2 + ab – ba – b^2
The two middle terms cancel each other out and leaves (a^2 – b^2)
Difference in this context means that you’re subtracting the two squares