2^2−16x+22=0

A:x={4, −4}

B:x={4+5√,4−5√}

C:x={5√, −5√}

D:x={9,−9}

Step-by-step explanation:

x  

2

=36x, squared, equals, 36

(x-2)^2=49(x−2)  

2

=49left parenthesis, x, minus, 2, right parenthesis, squared, equals, 49 [Why is this a quadratic equation?]

x^2  

x, squared(x-2)^2  

x^2  

x, squared

2x^2+3=1312x  

2

+3=131

439400

step-by-step explanation:

130^2 = 16900

16900*26 = 439400

4/6 = 2/3

so it should take 3/3 hours per man. so 9 hours is the answer 3*3 =9

step-by-step explanation: