3.643 x 10^-1 would be the answer
We have

so this is indeed a difference of squares. Factorizing would give

making the answer D.
We can further factor the first term here and write

but that's clearly out of the scope of this question.
Answer:
I get z = +1.8
x= 79
m= 73;s= 4;z= (x-m)/s= 1.5
hope it helps you
The magnitude of YZ is 8.6
<u>Explanation:</u>
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Y( -4, 12)
Z ( 1, 19)
Magnitude of YZ = ?
We know:

On substituting the value we get:

Thus, the magnitude of YZ is 8.6
Answer:
x = 9
Step-by-step explanation:
17x - 1 = 84 + 7x + 5
17x - 7x = 84 + 5 + 1
10x = 90
x = 9