Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation 2x-3=10
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Equation 2*sin(x)=0
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Equation x+5=0
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Equation x^4-x^2+1=0
- Express {x} in terms of y where:
- -7*x-11*y=18
- -4*x-3*y=13
- 7*x-17*y=-6
- -2*x-10*y=20
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Identical expressions
- 5x+ four *(x- two)= seventeen , two
- 5x plus 4 multiply by (x minus 2) equally 17,2
- 5x plus four multiply by (x minus two) equally seventeen , two
- 5x+4(x-2)=17,2
- 5x+4x-2=17,2
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Similar expressions
- 5x-4*(x-2)=17,2
- 5x+4*(x+2)=17,2
5x+4*(x-2)=17,2 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
Expand brackets in the right part
Looking for similar summands in the left part:
Move free summands (without x)
from left part to right part, we given:
$$9 x = \frac{126}{5}$$
Divide both parts of the equation by 9
We get the answer: x = 14/5
5*x+4*(x-2) = (86/5)
Expand brackets in the left part
5*x+4*x-4*2 = (86/5)
Expand brackets in the right part
5*x+4*x-4*2 = 86/5
Looking for similar summands in the left part:
-8 + 9*x = 86/5
Move free summands (without x)
from left part to right part, we given:
$$9 x = \frac{126}{5}$$
Divide both parts of the equation by 9
x = 126/5 / (9)
We get the answer: x = 14/5
Sum and product of roots
[src]
sum
14/5
$$\frac{14}{5}$$
=
14/5
$$\frac{14}{5}$$
product
14/5
$$\frac{14}{5}$$
=
14/5
$$\frac{14}{5}$$
14/5