Math, asked by noufa789777, 1 year ago

please answer these 3 questions plz guys

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Answered by gita42
0
answers:
b = option a i.e. 3145
c=629 is the number which square is 3145
by following the square root method
I.e √3145=629
d = 3249
by applying identities
like (a-b)²= a²+b²-2ab
I.e. (60-3)²= 60²+3²-2x 60 x 3=3249
hope it helps...
Answered by msk22966
0

Answer:


Step-by-step explaition:

9+11+.........+(2n-1) , where n= 5,6,......

TN = 9+(n-1)2 = 3120,

(n-1)2 = 3111.

(n-1) = 3111/2

n=1555.5

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