Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation 3*x^2-x-5=0
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Equation x/(75/5)=60
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Equation 4^x-6*2^x+8=0
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Equation x+20=20+x
- Express {x} in terms of y where:
- -19*x-17*y=6
- -5*x+7*y=-18
- 2*x-16*y=-5
- -15*x+4*y=14
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Identical expressions
- five *(x- two) two -45x= zero
- 5 multiply by (x minus 2)2 minus 45x equally 0
- five multiply by (x minus two) two minus 45x equally zero
- 5(x-2)2-45x=0
- 5x-22-45x=0
- 5*(x-2)2-45x=O
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Similar expressions
- 5*(x-2)2+45x=0
- 5*(x+2)2-45x=0
- (5x-2)^2-4(5x-2)-5=0
5*(x-2)2-45x=0 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:
$$- 35 x = 20$$
Divide both parts of the equation by -35
We get the answer: x = -4/7
5*(x-2)*2-45*x = 0
Expand brackets in the left part
5*x*2-5*2*2-45*x = 0
Looking for similar summands in the left part:
-20 - 35*x = 0
Move free summands (without x)
from left part to right part, we given:
$$- 35 x = 20$$
Divide both parts of the equation by -35
x = 20 / (-35)
We get the answer: x = -4/7
Sum and product of roots
[src]
sum
-4/7
$$- \frac{4}{7}$$
=
-4/7
$$- \frac{4}{7}$$
product
-4/7
$$- \frac{4}{7}$$
=
-4/7
$$- \frac{4}{7}$$
-4/7