Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation -x^2-4*x-3=0
-
Equation 3x+3=-2-7x
-
Equation 2*x^2+2*x-12=0
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Equation x²-6x+5=0
- Express {x} in terms of y where:
- 14*x+5*y=-16
- 5*x-7*y=6
- -10*x+3*y=-10
- 19*x-14*y=8
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Identical expressions
- (x- one)(x- five)(x+ three)(x+ seven)= zero
- (x minus 1)(x minus 5)(x plus 3)(x plus 7) equally 0
- (x minus one)(x minus five)(x plus three)(x plus seven) equally zero
- x-1x-5x+3x+7=0
- (x-1)(x-5)(x+3)(x+7)=O
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Similar expressions
- (x-1)(x+5)(x+3)(x+7)=0
- (x+1)(x-5)(x+3)(x+7)=0
- (x-1)(x-5)(x+3)(x-7)=0
- (x-1)(x-5)(x-3)(x+7)=0
(x-1)(x-5)(x+3)(x+7)=0 equation
The teacher will be very surprised to see your correct solution 😉
The solution
You have entered
[src]
(x - 1)*(x - 5)*(x + 3)*(x + 7) = 0
$$\left(x - 5\right) \left(x - 1\right) \left(x + 3\right) \left(x + 7\right) = 0$$
Sum and product of roots
[src]
sum
-7 - 3 + 1 + 5
$$\left(\left(-7 - 3\right) + 1\right) + 5$$
=
-4
$$-4$$
product
-7*(-3)*5
$$5 \left(- -21\right)$$
=
105
$$105$$
105
Rapid solution
[src]
x1 = -7
$$x_{1} = -7$$
x2 = -3
$$x_{2} = -3$$
x3 = 1
$$x_{3} = 1$$
x4 = 5
$$x_{4} = 5$$
x4 = 5