Mister Exam
Other calculators
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How to use it?
- Equation:
-
Equation x^2+9x+20=0
- Equation 9^x-26*3^x-27=0
- Equation cos^2x-3sinxcosx+2sin^2x=2
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Equation 2*x^4-15*x^3+35*x^2-30x+8=0
- Express {x} in terms of y where:
- 4*x-16*y=6
- sqrt(x^2+y^2+4x-6y-12)+(x^2+10x-27)=8-|y-9|+|y-3|
- 10*x-1*y=10
- 15*x-17*y=19
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Identical expressions
- two *x^ four - fifteen *x^ three + thirty-five *x^ two -3 zero x+ eight =0
- 2 multiply by x to the power of 4 minus 15 multiply by x cubed plus 35 multiply by x squared minus 30x plus 8 equally 0
- two multiply by x to the power of four minus fifteen multiply by x to the power of three plus thirty minus five multiply by x to the power of two minus 3 zero x plus eight equally 0
- 2*x4-15*x3+35*x2-30x+8=0
- 2*x⁴-15*x³+35*x²-30x+8=0
- 2*x to the power of 4-15*x to the power of 3+35*x to the power of 2-30x+8=0
- 2x^4-15x^3+35x^2-30x+8=0
- 2x4-15x3+35x2-30x+8=0
- 2*x^4-15*x^3+35*x^2-30x+8=O
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Similar expressions
- 2*x^4+15*x^3+35*x^2-30x+8=0
- 2*x^4-15*x^3+35*x^2+30x+8=0
- 2*x^4-15*x^3+35*x^2-30x-8=0
- 2*x^4-15*x^3-35*x^2-30x+8=0
2*x^4-15*x^3+35*x^2-30x+8=0 equation
The teacher will be very surprised to see your correct solution 😉
The solution
You have entered
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4 3 2 2*x - 15*x + 35*x - 30*x + 8 = 0
$$2 x^{4} - 15 x^{3} + 35 x^{2} - 30 x + 8 = 0$$
Rapid solution
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x1 = 1/2
$$x_{1} = \frac{1}{2}$$
x2 = 1
$$x_{2} = 1$$
x3 = 2
$$x_{3} = 2$$
x4 = 4
$$x_{4} = 4$$
Sum and product of roots
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sum
0 + 1/2 + 1 + 2 + 4
$$\left(\left(\left(0 + \frac{1}{2}\right) + 1\right) + 2\right) + 4$$
=
15/2
$$\frac{15}{2}$$
product
1*1/2*1*2*4
$$1 \cdot \frac{1}{2} \cdot 1 \cdot 2 \cdot 4$$
=
4
$$4$$
4
The graph