Math, asked by AnuragRajSingh, 1 year ago

factorise 5 t square - 10 t- 390 equal to zero​

Answers

Answered by rajpundkar2004
1

Answer:

it cant be solved by factorisation u can solve it by formula method or completing sq. method

Answered by sonali844470
3

5t^2-10t-390

5(t^2-2t-78) = 0

t^2-2t-78 = 0/5

t^2-2t-78 = 0

t^2-2t = 78

one is added to both part

t^2-2t+1 = 78+1

(t-1)^2 = 79

(t-1) = √79

t = 1+√79

t = 1+8.888

t = 9.888

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