When a quadratic equation ax^2+bx+c has a double root, the discriminant,
D=b^2-4ac=0
Here
a=2,
b=b,
c=18
and
D=b^2-4ac=b^2-4*2*18=0
solve for b
b^2-144=0
=> b= ± sqrt(144)= ± 12
So in order that the given equation has double roots, the possible values of b are ± 12.
Answer:
1. 8 is bigger
2. -9 is bigger
3. 12 is bigger
Step-by-step explanation:
Answer:
47/5
Step-by-step explanation:
First step: multiply the denominator (bottom of the fraction) of the fraction by the whole number.
5*9 = 45
Second Step: add the numerator
45 + 2 = 47
Third step: Put the result over the denominator.
47/5
Answer:
(3, 2)
Step-by-step explanation:
Answer:
i. false
ii. true
iii. true
iv. false
When comparing negative numbers, if you disregard the negative sign, the apparent greater value will actually be the smaller.