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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
97=2
x^2x^2=0 they are canceled so the answeris:
9x^27x^2=97=2
x^2x^2=0
=2
Simplify:
9x^2t  7x^2t
Answer:
2tx^2
= 9xÂ²t  7xÂ²t
= 2xÂ²t
Answer: 2xÂ²t