Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation x^2-7x+12=0
- Equation x-y=2
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Equation sqrt(x)=9
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Equation 4x+3(x-7)=5
- Express {x} in terms of y where:
- 2*x+3*y=14
- -17*x+18*y=10
- 6*x-9*y=18
- 8*x+3*y=4
- Graphing y =:
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sqrt(x)
- Derivative of:
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sqrt(x)
- Sum of series:
- sqrt(x)
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Identical expressions
- sqrt(x)= nine
- square root of (x) equally 9
- square root of (x) equally nine
- √(x)=9
- sqrtx=9
-
Similar expressions
- sqrt(x+1)=8-sqrt(3x+1)
- sqrt(x+4-sqrt(x-4))+sqrt(x-4-sqrt(x-4))=4
- cos(pi*sqrtx)=-sqrt(3)/2
sqrt(x)=9 equation
The teacher will be very surprised to see your correct solution 😉
The solution
Detail solution
Given the equation
$$\sqrt{x} = 9$$
Because equation degree is equal to = 1/2 - does not contain even numbers in the numerator, then
the equation has single real root.
We raise the equation sides to 2-th degree:
We get:
$$\left(\sqrt{1 x + 0}\right)^{2} = 9^{2}$$
or
$$x = 81$$
We get the answer: x = 81
The final answer:
$$x_{1} = 81$$
$$\sqrt{x} = 9$$
Because equation degree is equal to = 1/2 - does not contain even numbers in the numerator, then
the equation has single real root.
We raise the equation sides to 2-th degree:
We get:
$$\left(\sqrt{1 x + 0}\right)^{2} = 9^{2}$$
or
$$x = 81$$
We get the answer: x = 81
The final answer:
$$x_{1} = 81$$
Sum and product of roots
[src]
sum
0 + 81
$$0 + 81$$
=
81
$$81$$
product
1*81
$$1 \cdot 81$$
=
81
$$81$$
81
The graph