Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation (7-x)^2=(x+16)^2
-
Equation 3(4-2x)+6=-2x+4
-
Equation 9+12x-5x^2=0
- Equation (x^2-49)^2+(x^2+2x-35)^2=0
- Express {x} in terms of y where:
- -11*x+4*y=-8
- -14*x+1*y=3
- 14*x+16*y=14
- 16*x+7*y=8
- Integral of d{x}:
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-2x+4
- Graphing y =:
- -2x+4
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Identical expressions
- three (four -2x)+ six =-2x+ four
- 3(4 minus 2x) plus 6 equally minus 2x plus 4
- three (four minus 2x) plus six equally minus 2x plus four
- 34-2x+6=-2x+4
-
Similar expressions
- 3(4-2x)+6=+2x+4
- 3*(4-2*x)+6=-2*x+4
- 3(4+2x)+6=-2x+4
- 3(4-2x)+6=-2x-4
- 70-(2x+4):4=65
- 5x-12-2(x-1)=3(5-2x)+4x
- -2*x+4*x+5=2*x^2-7*x+2*x-3
- 3(5-2x)+4x=-7x
- 3(4-2x)-6=-2x+4
3(4-2x)+6=-2x+4 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:
$$- 6 x = - 2 x - 14$$
Move the summands with the unknown x
from the right part to the left part:
$$\left(-4\right) x = -14$$
Divide both parts of the equation by -4
We get the answer: x = 7/2
3*(4-2*x)+6 = -2*x+4
Expand brackets in the left part
3*4-3*2*x+6 = -2*x+4
Looking for similar summands in the left part:
18 - 6*x = -2*x+4
Move free summands (without x)
from left part to right part, we given:
$$- 6 x = - 2 x - 14$$
Move the summands with the unknown x
from the right part to the left part:
$$\left(-4\right) x = -14$$
Divide both parts of the equation by -4
x = -14 / (-4)
We get the answer: x = 7/2
Sum and product of roots
[src]
sum
7/2
$$\frac{7}{2}$$
=
7/2
$$\frac{7}{2}$$
product
7/2
$$\frac{7}{2}$$
=
7/2
$$\frac{7}{2}$$
7/2
The graph