Answer:
a = - 4, b = 5
Step-by-step explanation:
Expand the left side and compare the coefficients of like terms on the right side.
- 3(2x² + ax + b)
= - 6x² - 3ax - 3b
Comparing like terms with - 6x² + 12x - 15
x - term → - 3a = 12 ( divide both sides by - 3 )
a = - 4
constant term → - 3b = - 15 ( divide both sides by - 3 )
b = 5
Starts with 5 then adds 6 repeatedly
Answer:
21 inches answer F
Step-by-step explanation:
x+6+2x-2+2x+6=85
5x+10=85
5x=75
x=15
shortest is x+6
15+6
21.
Hope this helps plz hit the crown :D
