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Question 2 of 10

Which of the following are solutions to the equation below?
Check all that apply.

Question 2 of 10 Which of the following are solutions to the equation below? Check-example-1
User Gilberto
by
8.0k points

1 Answer

3 votes

Answer:

f)
x=-3+2√(5)

b)
x=-3-2√(5)

Explanation:


x^2+6x+9=20


x^2+6x+9-20=0


x^2+6x-11=0

a = 1 (there is an invisible 1 in front of
x^2)

b = 6

c = -11


x=(-b±√(b^2-4ac) )/(2a)


x=(-6±√(6^2-4*1*(-11)) )/(2*1)


x=(-6±√(36-4*(-11)) )/(2)


x=(-6±√(36+44) )/(2)


x=(-6±√(80) )/(2)
x=(-6±4√(5))/(2)


x=(-6+4√(5))/(2)


x=(-6-4√(5))/(2)


x=-3+2√(5)


x=-3-2√(5)


x=-3+2√(5)


x=-3-2√(5)

Hope this helps!

Question 2 of 10 Which of the following are solutions to the equation below? Check-example-1
User Mahboob
by
8.9k points

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