Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation -x^2+6*x-7=0
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Equation 7x=-3
-
Equation 7x-5=6x+1
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Equation 33x-27x=48
- Express {x} in terms of y where:
- -14*x+6*y=20
- 18*x+14*y=-6
- 9*x+5*y=15
- -2*x-11*y=4
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Identical expressions
- − two (x− five)= nine .
- −2(x−5) equally 9.
- − two (x− five) equally nine .
- −2x−5=9.
−2(x−5)=9. 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:
$$- 2 x = -1$$
Divide both parts of the equation by -2
We get the answer: x = 1/2
-2*(x-5) = 9
Expand brackets in the left part
-2*x+2*5 = 9
Move free summands (without x)
from left part to right part, we given:
$$- 2 x = -1$$
Divide both parts of the equation by -2
x = -1 / (-2)
We get the answer: x = 1/2
Sum and product of roots
[src]
sum
1/2
$$\frac{1}{2}$$
=
1/2
$$\frac{1}{2}$$
product
1/2
$$\frac{1}{2}$$
=
1/2
$$\frac{1}{2}$$
1/2