crystalrmtz29 crystalrmtz29

25-09-2019
Mathematics

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PLEASE HELP ME!! I DO NOT UNDERSTAND PLEASE SHOW WORK THANK YOU!!

PLEASE HELP ME I DO NOT UNDERSTAND PLEASE SHOW WORK THANK YOU class=

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marcthemathtutor marcthemathtutor

25-09-2019

Answer:

= 10x² + 9x³

Step-by-step explanation:

I'm assuming you mean question 19

3x² + 5x³ + 7x² + 4x³ (rearrange to group like terms)

=3x² + 7x² + 5x³ + 4x³ (factor out common powers)

= (3+7)x² + (5+4)x³

= 10x² + 9x³

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