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svet-max [94.6K]
3 years ago
6

What are the solutions to the equation x2 = 9? Explain why is more than one solution to the equation.

Mathematics
1 answer:
Firdavs [7]3 years ago
6 0

ANSWER

x =  - 3 \:  \: or \:  \: x = 3

The degree is two so it must have more than one solution.

EXPLANATION

The given equation is

{x}^{2}  = 9

Let us use the square root method to solve this equation.

Since the degree of x is two, the <em>fundamental theorem of algebra</em> says it must have 2 roots.

We take square root to obtain,

x =  \pm \sqrt{9}

x =  \pm3

Split the plus or minus sign to obtain,

x =  - 3 \:  \: or \:  \: x = 3

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3 0
3 years ago
One number is nine more than the other. Their sum is 33. Find the numbers. (Enter your answers as a comma-separated list.)
Bas_tet [7]

Answer:

The numbers are 12, 21.

Step-by-step explanation:

x+(x+9)=33

x+x+9=33

2x+9=33

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x=12

--------

x+9=12+9=21

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3 years ago
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Hoochie [10]

Answer:

The system of equations has one solution. The two equations are intersecting lines.

Step-by-step explanation:

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next, you have to distribute

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7 0
3 years ago
6 times the difference of a number and 4 equals 7
Nonamiya [84]
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3 years ago
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