Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation sin(x)+cos(x)=-1
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Equation x^2-3*x+3=0
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Equation √(x^2-1)^3=2*x
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Equation 1/(x-3)^2-8/(x-3)+15=0
- Express {x} in terms of y where:
- -11*x+10*y=-9
- -9*x-4*y=-20
- -6*x-12*y=9
- 6*x-2*y=-10
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Identical expressions
- eleven - seven *(x+ two)= zero
- 11 minus 7 multiply by (x plus 2) equally 0
- eleven minus seven multiply by (x plus two) equally zero
- 11-7(x+2)=0
- 11-7x+2=0
- 11-7*(x+2)=O
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Similar expressions
- 11+7*(x+2)=0
- 11-7*(x-2)=0
11-7*(x+2)=0 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:
$$- 7 x = 3$$
Divide both parts of the equation by -7
We get the answer: x = -3/7
11-7*(x+2) = 0
Expand brackets in the left part
11-7*x-7*2 = 0
Looking for similar summands in the left part:
-3 - 7*x = 0
Move free summands (without x)
from left part to right part, we given:
$$- 7 x = 3$$
Divide both parts of the equation by -7
x = 3 / (-7)
We get the answer: x = -3/7
Sum and product of roots
[src]
sum
-3/7
$$- \frac{3}{7}$$
=
-3/7
$$- \frac{3}{7}$$
product
-3/7
$$- \frac{3}{7}$$
=
-3/7
$$- \frac{3}{7}$$
-3/7