Mister Exam
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How to use it?
- Equation:
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Equation (5x-8)(4x-3)=0
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Equation 15x^4-16x^3-30x^2+16x+15=0
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Equation k^2-3*k+2=0
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Equation ctg(x/2)=√3
- Express {x} in terms of y where:
- 9*x-8*y=6
- 15*x+15*y=16
- 8*x+7*y=-13
- -4*x+18*y=-14
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Identical expressions
- fifteen x^ four -16x^ three -3 zero x^ two +16x+15=0
- 15x to the power of 4 minus 16x cubed minus 30x squared plus 16x plus 15 equally 0
- fifteen x to the power of four minus 16x to the power of three minus 3 zero x to the power of two plus 16x plus 15 equally 0
- 15x4-16x3-30x2+16x+15=0
- 15x⁴-16x³-30x²+16x+15=0
- 15x to the power of 4-16x to the power of 3-30x to the power of 2+16x+15=0
- 15x^4-16x^3-30x^2+16x+15=O
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Similar expressions
- 15*x^4-16*x^3-30*x^2+16*x+15=0
- 15x^4-16x^3-30x^2+16x-15=0
- 15x^4-16x^3-30x^2-16x+15=0
- 15x^4+16x^3-30x^2+16x+15=0
- 15x^4-16x^3+30x^2+16x+15=0
15x^4-16x^3-30x^2+16x+15=0 equation
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The solution
You have entered
[src]
4 3 2 15*x - 16*x - 30*x + 16*x + 15 = 0
$$\left(16 x + \left(- 30 x^{2} + \left(15 x^{4} - 16 x^{3}\right)\right)\right) + 15 = 0$$
Sum and product of roots
[src]
sum
-1 - 3/5 + 1 + 5/3
$$\left(\left(-1 - \frac{3}{5}\right) + 1\right) + \frac{5}{3}$$
=
16 -- 15
$$\frac{16}{15}$$
product
-(-3) ------*5 5 -------- 3
$$\frac{5 \left(- \frac{-3}{5}\right)}{3}$$
=
1
$$1$$
1
Rapid solution
[src]
x1 = -1
$$x_{1} = -1$$
x2 = -3/5
$$x_{2} = - \frac{3}{5}$$
x3 = 1
$$x_{3} = 1$$
x4 = 5/3
$$x_{4} = \frac{5}{3}$$
x4 = 5/3
The graph