Answer:
a = - 2, b = - 6
Step-by-step explanation:
Substitute the values of the zeros into the polynomial and equate to zero.
x² +(a + 1)x + b
x = - 2 → (- 2)² - 2(a + 1) + b = 0 , that is
4 - 2a - 2 + b = 0
2 - 2a + b = 0 ( subtract 2 from both sides )
- 2a + b = - 2 → (1)
x = 3 → 3² + 3(a + 1) + b = 0, that is
9 + 3a + 3 + b = 0
12 + 3a + b = 0 ( subtract 12 from both sides )
3a + b = - 12 → (2)
Subtract (1) from (2) term by term to eliminate b
5a = - 10 ( divide both sides by 5 )
a = - 2
Substitute a = - 2 into either of the 2 equations and evaluate for b
Substituting into (2)
3(- 2) + b = - 12
- 6 + b = - 12 ( add 6 to both sides )
b = - 6
Thus a = - 2 and b = - 6
27) Since it doesn't say which unit you're going to use, I'll say 3.5 inches.
28) 5.6 Ounces?
29) 375,000 Litres.
30) 120 Yards.
31) 355 ML.
32) 1,117KM.
I hope this much helped, the other questions my brain was too fried to do them, let me know if you need help with any of those though!
Answer:
wdwdwdwdwd
Step-by-step explanation:
dwwddwwd
Answer:
C or d
Step-by-step explanation:
