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Answers (3)
easy
9x^2
-
7x^2t
this are like terms, when we are substracting the powers arent move so the thing is like this
9-7=2
x^2-x^2=0 they are canceled so the answeris:
9x^2-7x^2=9-7=2
x^2-x^2=0
=2
Simplify:
9x^2t - 7x^2t
Answer:
2tx^2
= 9x²t - 7x²t
= 2x²t
Answer: 2x²t