Answer:
13x² - 4x
Step-by-step explanation:
3x + 4x² - 7x + 9x² ← collect like terms
= (4x² + 9x² ) + (3x - 7x)
= 13x² + (- 4x)
= 13x² - 4x
A. True...... ............ .......
The bookshelf is 4'3" tall. There is 12 inches in a foot twelve times 4 is 48. 48 plus three is fifty-one.
Answer:
68
Step-by-step explanation:
A P E X