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tatuchka [14]
3 years ago
6

Which of the following are solutions to the equation below? Check all that apply. 4x2 + 4x + 1 = 9​

Mathematics
1 answer:
Vilka [71]3 years ago
4 0

Answer:

4x^2 + 4x + 1=9

4x^2 + 4x - 8=0

Dividing both sides by 4

x^2 + x -2=0

It can be written as

x^2 + 2x - x - 2=0

x(x+2) -1(x+2)=0

taking (x+2) as common on LHS

Then, (x+2)(x-1)=0

Now first equate x+2=0  ie x=-2

then                 x-1=0 ie x=1

Therefore, x has two values(roots)

that is -2,1

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3 0
2 years ago
Bob's age is 4 times greater than Susanne's age. Dakota is three years younger than Susanne. The sum of Bob's, Susanne's, and Da
belka [17]
Susanne is 16 years old.

b = Bob's age

s = Susanne's age

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b = 4s

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d = s - 3

The sum of Bob's, Susanne's, and Dakota's ages is 93:

b + s + d = 93


 solve these equations:

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3 years ago
Which logarithmic equation is equivalent to the exponential equation 5c=250
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Answer:

c = log_{5}250

Step-by-step explanation:

8 0
3 years ago
Select all that apply.
Sergeu [11.5K]
I got B and D, sorry if my answers are wrong!!
5 0
2 years ago
In the figure, x ǁ y and a ǁ b.<br><br> What is m∠2?<br><br> m∠2 = ___°
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