Mister Exam
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How to use it?
- Equation:
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Equation x^2+2*x+10=0
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Equation 2^4-2*x=64
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Equation x^2+3*x+9=0
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Equation 8,4(y-17,9)=4,2
- Express {x} in terms of y where:
- -18*x-3*y=2
- 5*x+20*y=-4
- 20*x-8*y=13
- -16*x+18*y=9
- Sum of series:
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4,2
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Identical expressions
- eight , four (y- seventeen , nine)= four , two
- 8,4(y minus 17,9) equally 4,2
- eight , four (y minus seventeen , nine) equally four , two
- 8,4y-17,9=4,2
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Similar expressions
- 8,4(y+17,9)=4,2
8,4(y-17,9)=4,2 equation
The teacher will be very surprised to see your correct solution 😉
The solution
You have entered
[src]
/ 179\
42*|y - ---|
\ 10/
------------ = 21/5
5
$$\frac{42 \left(y - \frac{179}{10}\right)}{5} = \frac{21}{5}$$
Detail solution
Given the linear equation:
Expand brackets in the left part
Expand brackets in the right part
Move free summands (without y)
from left part to right part, we given:
$$\frac{42 y}{5} = \frac{3864}{25}$$
Divide both parts of the equation by 42/5
We get the answer: y = 92/5
(42/5)*(y-(179/10)) = (21/5)
Expand brackets in the left part
42/5y+179/10) = (21/5)
Expand brackets in the right part
42/5y+179/10) = 21/5
Move free summands (without y)
from left part to right part, we given:
$$\frac{42 y}{5} = \frac{3864}{25}$$
Divide both parts of the equation by 42/5
y = 3864/25 / (42/5)
We get the answer: y = 92/5
Sum and product of roots
[src]
sum
92/5
$$\frac{92}{5}$$
=
92/5
$$\frac{92}{5}$$
product
92/5
$$\frac{92}{5}$$
=
92/5
$$\frac{92}{5}$$
92/5
The graph