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s344n2d4d5 [400]
3 years ago
14

I need to find both of the solutions to the equation 100+(n-2)^ = 149

Mathematics
1 answer:
rodikova [14]3 years ago
5 0

Answer:

Step-by-step explanation:

hello :

100+(n-2)² = 149

100-100+(n-2)² = 149-100

(n-2)² = 49  

(n-2)² - 49  =0    but 49=7²

(n-2)² - 7²  =0   use identity : a²-b²=(a-b)(a+b)

(n-2-7)(n-2+7)=0

(n-9)(n+5)=0

n-9=0 or n+5=0

n=9 or n=-5

                                             

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