Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation 25*x^2=16
- Equation 3*x^2-48=0
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Equation x^2-5*x+7=0
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Equation x^2-10=0
- Express {x} in terms of y where:
- 1*x+11*y=-3
- -20*x+14*y=16
- 15*x-3*y=19
- 19*x+2*y=17
- Sum of series:
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-16
- Limit of the function:
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-16
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Identical expressions
- (x- seven)(x- five)(x- three)(x- one)=- sixteen
- (x minus 7)(x minus 5)(x minus 3)(x minus 1) equally minus 16
- (x minus seven)(x minus five)(x minus three)(x minus one) equally minus sixteen
- x-7x-5x-3x-1=-16
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Similar expressions
- (x-7)(x-5)(x+3)(x-1)=-16
- (x-7)(x-5)(x-3)(x+1)=-16
- (x+7)(x-5)(x-3)(x-1)=-16
- (x-7)(x+5)(x-3)(x-1)=-16
- (x-7)(x-5)(x-3)(x-1)=+16
(x-7)(x-5)(x-3)(x-1)=-16 equation
The teacher will be very surprised to see your correct solution 😉
The solution
You have entered
[src]
(x - 7)*(x - 5)*(x - 3)*(x - 1) = -16
$$\left(x - 7\right) \left(x - 5\right) \left(x - 3\right) \left(x - 1\right) = -16$$
Sum and product of roots
[src]
sum
___ ___ 4 - \/ 5 + 4 + \/ 5
$$\left(4 - \sqrt{5}\right) + \left(\sqrt{5} + 4\right)$$
=
8
$$8$$
product
/ ___\ / ___\ \4 - \/ 5 /*\4 + \/ 5 /
$$\left(4 - \sqrt{5}\right) \left(\sqrt{5} + 4\right)$$
=
11
$$11$$
11
Rapid solution
[src]
___ x1 = 4 - \/ 5
$$x_{1} = 4 - \sqrt{5}$$
___ x2 = 4 + \/ 5
$$x_{2} = \sqrt{5} + 4$$
x2 = sqrt(5) + 4