Question

6. Without finding the squares of the numbers,
find the value of (131)*2– (130)*2
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Answer 1

Answer:

$(131 + 130)(131 - 130) \\ (261)(1) \\ 261$

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Answer 2

Answer:

261

Step-by-step explanation:

(131)^2-(130)^2 = (131 + 130)(131 - 130) = 261