Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation x^2-8*x+17=0
- Equation x-y=1
- Equation y+x-4=0
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Equation 2-3(7+2x)=11
- Express {x} in terms of y where:
- 2*x+3*y=14
- 18*x-8*y=-2
- -11*x+15*y=7
- -7*x-13*y=5
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Identical expressions
- y+x- four = zero
- y plus x minus 4 equally 0
- y plus x minus four equally zero
- y+x-4=O
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Similar expressions
- y-x-4=0
- y+x+4=0
y+x-4=0 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:
Move free summands (without x)
from left part to right part, we given:
$$x + y = 4$$
Move the summands with the other variables
from left part to right part, we given:
$$x = 4 - y$$
We get the answer: x = 4 - y
y+x-4 = 0
Looking for similar summands in the left part:
-4 + x + y = 0
Move free summands (without x)
from left part to right part, we given:
$$x + y = 4$$
Move the summands with the other variables
from left part to right part, we given:
$$x = 4 - y$$
We get the answer: x = 4 - y
The graph
Rapid solution
[src]
x1 = 4 - re(y) - I*im(y)
$$x_{1} = - \operatorname{re}{\left(y\right)} - i \operatorname{im}{\left(y\right)} + 4$$
x1 = -re(y) - i*im(y) + 4
Sum and product of roots
[src]
sum
4 - re(y) - I*im(y)
$$- \operatorname{re}{\left(y\right)} - i \operatorname{im}{\left(y\right)} + 4$$
=
4 - re(y) - I*im(y)
$$- \operatorname{re}{\left(y\right)} - i \operatorname{im}{\left(y\right)} + 4$$
product
4 - re(y) - I*im(y)
$$- \operatorname{re}{\left(y\right)} - i \operatorname{im}{\left(y\right)} + 4$$
=
4 - re(y) - I*im(y)
$$- \operatorname{re}{\left(y\right)} - i \operatorname{im}{\left(y\right)} + 4$$
4 - re(y) - i*im(y)