Mister Exam
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How to use it?
- Equation:
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Equation 81*x^3+18*x^2+x=0
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Equation (-x-4)*(3*x+3)=0
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Equation -x=5
- Express {x} in terms of y where:
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- 15*x+10*y=-4
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Identical expressions
- √ thirty -2x= four
- √30 minus 2x equally 4
- √ thirty minus 2x equally four
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Similar expressions
- √30+2x=4
√30-2x=4 equation
The teacher will be very surprised to see your correct solution 😉
The solution
Detail solution
Given the linear equation:
Expand brackets in the left part
Divide both parts of the equation by (sqrt(30) - 2*x)/x
We get the answer: x = -2 + sqrt(30)/2
sqrt(30)-2*x = 4
Expand brackets in the left part
sqrt30-2*x = 4
Divide both parts of the equation by (sqrt(30) - 2*x)/x
x = 4 / ((sqrt(30) - 2*x)/x)
We get the answer: x = -2 + sqrt(30)/2
Rapid solution
[src]
____
\/ 30
x1 = -2 + ------
2
$$x_{1} = -2 + \frac{\sqrt{30}}{2}$$
x1 = -2 + sqrt(30)/2
Sum and product of roots
[src]
sum
____
\/ 30
-2 + ------
2
$$-2 + \frac{\sqrt{30}}{2}$$
=
____
\/ 30
-2 + ------
2
$$-2 + \frac{\sqrt{30}}{2}$$
product
____
\/ 30
-2 + ------
2
$$-2 + \frac{\sqrt{30}}{2}$$
=
____
\/ 30
-2 + ------
2
$$-2 + \frac{\sqrt{30}}{2}$$
-2 + sqrt(30)/2