Answer:
Can I have a picture/image if possible?
Step-by-step explanation:
Answer:
part A is 120
Step-by-step explanation:
6 × 20 = 120
part B
Answer:
k=2
Problem:
if the equation x^2 +(k+2)x+2k=0 has equal roots,then the value of k is ..
Step-by-step explanation:
Since the coefficient of x^2 is 1, we can use this identity to aid us: x^2+bx+(b/2)^2=(x+b/2)^2.
So we want the following:
[(k+2)/2]^2=2k
Apply the power on the left:
(k+2)^2/4=2k
Multiply both sides by 4:
(k+2)^2=8k
Expand left side:
k^2+4k+4=8k *I used identity (x+c)^2=x^2+2xc+c^2
Subtract 8k on both sides:
k^2-4k+4=0
Factor using the identity mentioned a couple lines above:
(k-2)^2=0
Since zero squared is zero, we want k-2=0.
Adding both sides by 2 gives k=2.
Answer:
[B] >
Step-by-step explanation:
One way to find the correct symbol is
Cross Multiply:
⊂⊃ 
Don't know how to cross multiply?
Answer to cross multiply - Multiplying the numerator of the left-hand fraction by the denominator of the right-hand fraction. That the first step. After that, multiply the numerator of the right-hand fraction by the denominator of the left-hand fraction. Which is shown below in picture.
Now let's start:

1 × 4 = 4
1 × 3 = 3
Thus we have:

4 is bigger than 3
Thus the correct symbol is:
<u><em>Kavinsky</em></u>