6) Identify the mistake made:
x2 - 4x = -2
x2 - 4x - 2 = 0
4 + V-4*41X-2) = *=V16=8 = 4x2 = **7 = 2 = 16
2(1)
a) No mistake
b) They simplified the square root incorrectly.
c) Plugged in the numbers incorrectly
d) When moving the constant, they did not move it correctly, it should be a positive number.

Anyone know? will mark brainliest if correct

Find the solution(s) to the system of equations. select all that apply y=x^2-1 y=2x-2

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.