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Help for brainliest plx

Help For Brainliest Plx class=

Sagot :

Answer:

1) 2x cube - 3x square + 9x

2) 4z to the power of 6 + z to the power of 5 - 11z to the power of 4 - 6z square

3) 9a to the power of 7 - 5a to the power of 6- 13a to the power of 5