Question

(5 + 5-1) (5-5-1) simplify that question ​

Answer 1

Answer:

9

Step-by-step explanation:

We can use this formula (a+b)(a-b) = a²-b²

here a=5 , b=5-1=4

a²-b²=5²-4²=25-16=9

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Answer 2

Answer:

25-16= 9

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