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: 3π in terms of pi or 9.42 if in π or pi= 3.14
Step-by-step explanation:
Answer:
3*n<4=11
Step-by-step explanation:
Three times a number n less than 4 is 11
Answer:
SLOPE = - 4
y-intercept = 9
Step-by-step explanation:
Slope = - 8/2 = - 4
Y-INTERCEPT = 18/2 = 9
Answer:
x = 4 1/3 or 13/3
Step-by-step explanation:
First: Distribute
2(x+5) = 5x + 23 -----> 2x + 10 = 5x + 23
Second: Put like terms together
subtract 2x from both sides, then subtract 23 from both sides
-13 = 3x
Third: Divide and solve for x
-13/3 = x
x= 4 1/3 or 13/3
