Question

495=n(n-3)/2 someone tell the ans fast pls and pls give step to step explanation
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Answer 1

Answer:

33 and -30

Step-by-step explanation:

n(n-3)/2= 495

n(n-3)= 495*2

n²-3n= 990

n²-3n-990= 0

n²-33n+30n-990=0

n(n-33)+30(n-33)=0

(n+30)+(n-33)=0

Therefore,we will get two values of n

(1) n+30=0

n= -30

(2) n-33=0

n= 33

Answer= 33 and -30

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