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The Brainliest Answer!

Rule :

In Multiplication , when bases are same powers are added.

here base = t and powers of t are 1 and 2

hence sum of powers of t =1+2 =3

therefore ,

s²×(-s)= (-s)² × (-s) (because (- s)² = s²)

here base = -s

powers of -s are 2 and 1

sum of powers of -s = 1+2 =3

Apply rule , when bases are same powers are added .

therefore ,

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