Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation x^2+3x+2=0
-
Equation z^2-6*z+10=0
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Equation x^2+5x+6=0
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Equation -x/7+x=15/7
- Express {x} in terms of y where:
- -20*x-6*y=4
- -13*x+7*y=-15
- 5*x-14*y=-15
- -12*x-10*y=-16
- Sum of series:
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13
- Canonical form:
- 13
- Derivative of:
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13
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Identical expressions
- nine - four (nine +2x)= thirteen
- 9 minus 4(9 plus 2x) equally 13
- nine minus four (nine plus 2x) equally thirteen
- 9-49+2x=13
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Similar expressions
- 9+4(9+2x)=13
- 9-4(9-2x)=13
9-4(9+2x)=13 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:
$$- 8 x = 40$$
Divide both parts of the equation by -8
We get the answer: x = -5
9-4*(9+2*x) = 13
Expand brackets in the left part
9-4*9-4*2*x = 13
Looking for similar summands in the left part:
-27 - 8*x = 13
Move free summands (without x)
from left part to right part, we given:
$$- 8 x = 40$$
Divide both parts of the equation by -8
x = 40 / (-8)
We get the answer: x = -5
Sum and product of roots
[src]
sum
0 - 5
$$-5 + 0$$
=
-5
$$-5$$
product
1*-5
$$1 \left(-5\right)$$
=
-5
$$-5$$
-5
The graph