1) Expand: (6p - 7)^2
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Answer:
(a-b)²= a²+b²-2ab is used for expansion
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Step-by-step explanation:
(6p-7)^2=36p^2+49-2×6p×7
= 36p^2+49-84p
According to (A+B)^2=a^2+b^2+2ab
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