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Scorpion4ik [409]
2 years ago
14

Subtract and simplify answer.

Mathematics
2 answers:
Schach [20]2 years ago
7 0

(s^2+5st-9t^2)-(2s^2-2st+2t^2)=\\\\=s^2+5st-9t^2-2s^2+2st-2t^2=\\\\=s^2-2s^2-9t^2-2t^2+5st+2st=\boxed{-s^2-11t^2+7st}

Radda [10]2 years ago
7 0

Answer:

-s^2+7st-11t^2

Step-by-step explanation:

s^2 +5st - 9t^2 - ( 2s^2 -2st +2t^2)

Distribute the minus sign

s^2 +5st - 9t^2 -  2s^2 +2st -2t^2

Combine like terms

-s^2+7st-11t^2

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