Mister Exam
Other calculators
-
How to use it?
- Equation:
- Equation a^2*x^2-21*a^2+a*x+1=0
-
Equation 5-x=4(x-3)
-
Equation exp(x)=0
-
Equation 3^x=8
- Express {x} in terms of y where:
- 9*x-19*y=-20
- 15*x+17*y=-10
- -11*x-18*y=6
- -7*x-5*y=-17
-
Identical expressions
- - two (two /5x+ nine)=- thirty-one
- minus 2(2 divide by 5x plus 9) equally minus 31
- minus two (two divide by 5x plus nine) equally minus thirty minus one
- -22/5x+9=-31
- -2(2 divide by 5x+9)=-31
-
Similar expressions
- -2(2/5x-9)=-31
- -2(2/5x+9)=+31
- 3(x-3)^(1/3)+9=2(x^2-6x+9)^(1/3)
- ((2+(3)^(1/2))^(1/2))^(x)+((2-(3)^(1/2))^(1/2))^(x)=2^x
- x-(31-8)=23
- 2(2/5x+9)=-31
- -3(1+4x)=-4x-5
-2(2/5x+9)=-31 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
Move free summands (without x)
from left part to right part, we given:
$$- \frac{4 x}{5} = -13$$
Divide both parts of the equation by -4/5
We get the answer: x = 65/4
-2*(2/5*x+9) = -31
Expand brackets in the left part
-2*2/5*x-2*9 = -31
Move free summands (without x)
from left part to right part, we given:
$$- \frac{4 x}{5} = -13$$
Divide both parts of the equation by -4/5
x = -13 / (-4/5)
We get the answer: x = 65/4
Sum and product of roots
[src]
sum
65/4
$$\frac{65}{4}$$
=
65/4
$$\frac{65}{4}$$
product
65/4
$$\frac{65}{4}$$
=
65/4
$$\frac{65}{4}$$
65/4