Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation x^2-9x+20=0
-
Equation 20-7(5x-4)=6
-
Equation (x-2)^2+(x-8)^2=2x^2
-
Equation x^4+2x^2-3=0
- Express {x} in terms of y where:
- 10*x-1*y=10
- 15*x-17*y=19
- 9*x-8*y=6
- 15*x+15*y=16
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Identical expressions
- twenty - seven (5x- four)= six
- 20 minus 7(5x minus 4) equally 6
- twenty minus seven (5x minus four) equally six
- 20-75x-4=6
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Similar expressions
- 20+7(5x-4)=6
- 20-7(5x+4)=6
20-7(5x-4)=6 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
Looking for similar summands in the left part:
Move free summands (without x)
from left part to right part, we given:
$$- 35 x = -42$$
Divide both parts of the equation by -35
We get the answer: x = 6/5
20-7*(5*x-4) = 6
Expand brackets in the left part
20-7*5*x+7*4 = 6
Looking for similar summands in the left part:
48 - 35*x = 6
Move free summands (without x)
from left part to right part, we given:
$$- 35 x = -42$$
Divide both parts of the equation by -35
x = -42 / (-35)
We get the answer: x = 6/5
Sum and product of roots
[src]
sum
6/5
$$\frac{6}{5}$$
=
6/5
$$\frac{6}{5}$$
product
6/5
$$\frac{6}{5}$$
=
6/5
$$\frac{6}{5}$$
6/5
The graph