Question

what is the solution of t^2-2t-40​

Answer 1

Answer:

0

Step-by-step explanation:

t^2-2t-40 = 0

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Answer 2

Answer:

t^2-2 (t+20)=0

=t^2÷2-2(t+20)÷2=0

2 under t^2 will be shifted to the right hand side and 2 will be cut by 2 under (t+20)

t^2-t-20

factorizing 20

t^2-5t+4t-20

t (t-5)+4 (t -5)

(t-5)(t+4)

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