Nitin aggarwal sir

d^2 = (x-9)^2 + (4-10)^2 here, d is given 10. so, 100 = (x-9)^2 + 36 (x-9)^2 = 100-36 = 64 (x-9) = V64 (under root of 64) so, x-9 = +-6 (plus or minus 6)

x= 6+9 or x= -6 +9 x= 15 or 3

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