Answer:
x = 2±sqrt(11)
Step-by-step explanation:
x^2 -4x - 7 =0
Add 7 to each side
x^2 -4x -7+7 =0+7
x^2 -4x =7
To complete the square take the coefficient of the x term and divide by 2 and then square it. Add it to both sides
-4 /2 = -2 then square
(-2)^2 = 4
Add 4 to both sides
x^2 -4x+4 =7+4
x^2 -4x+4 = 11
Factor the left side into (x-b/2)^2
(x-2)^2 =11
Take the square root of each side
sqrt((x-2)^2) =±sqrt(11)
x-2 = ±sqrt(11)
Add to to each side
x-2+2 = 2±sqrt(11)
x = 2±sqrt(11)
Answer:
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Answer:
9/4:3/8=9/4×8/3=72/12=24/4=6/1=6
The endpoints
for the opposite side would be (8, 1) and (6, 5). The correct
answer between all the choices given is the last choice. I am hoping that this
answer has satisfied your query about and it will be able to help you, and if
you’d like, feel free to ask another question.
Answer:
Step-by-step explanation:
