Answer:
The roots are real and unequal (3, -3)
Step-by-step explanation:
x²-9=0
ax²+bx+c=0
Comparing we get,
a= 1
b= 0
c = -9
Determinant: b²-4ac
= 0² - 4(1)(-9)
= 36>0
D > 0
Therefore, the equation has real and unequal roots.
Algebraic identity:
x² - a² = (x-a)(x+a)
Using this identity
x²-9 = (x+3)(x-3)
Roots are 3 and -3 which are real and not equal to each other
Hope this answer helps you ..
Answer:
0.75 gallon
Step-by-step explanation:
3 gallons of batter are poured equally into 4 bowls.
We have to calculate the amount of batter in each bowl.
so we have to divide 3 gallons by 4 to get the answer.
Total amount of batter = 3 gallons
divided into number of bowls = 4
The amount in each bowl = 
gallons
= 0.75 gallons
0.75 gallon of batter are in each bowl.
Answer: One solution.
Step-by-step explanation:
2(2x-3)+5x=4x+8x
4x-6+5x=12x
9x-6=12x
-6=3x
x=-2
Answer:
20 = AC
Step-by-step explanation:
AB+BC = AC
11+9 = AC
20 = AC
