Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation 9^x-8*3^x-9=0
- Equation x+y=4
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Equation 5x+8=-12
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Equation x/9+x=-3
- Express {x} in terms of y where:
- 18*x+17*y=-14
- 16*x-17*y=-15
- -4*x-4*y=19
- 15*x+1*y=19
- Integral of d{x}:
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-3
- Sum of series:
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-3
- Derivative of:
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-3
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Identical expressions
- x/ nine +x=- three
- x divide by 9 plus x equally minus 3
- x divide by nine plus x equally minus three
- x divide by 9+x=-3
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Similar expressions
- x/9+x=+3
- x/9-x=-3
x/9+x=-3 equation
The teacher will be very surprised to see your correct solution 😉
The solution
Detail solution
Given the linear equation:
Looking for similar summands in the left part:
Divide both parts of the equation by 10/9
We get the answer: x = -27/10
x/9+x = -3
Looking for similar summands in the left part:
10*x/9 = -3
Divide both parts of the equation by 10/9
x = -3 / (10/9)
We get the answer: x = -27/10
Sum and product of roots
[src]
sum
-27 ---- 10
$$- \frac{27}{10}$$
=
-27 ---- 10
$$- \frac{27}{10}$$
product
-27 ---- 10
$$- \frac{27}{10}$$
=
-27 ---- 10
$$- \frac{27}{10}$$
-27/10
The graph