Mister Exam
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How to use it?
- Equation:
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Equation x^2-8*x+15=0
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Equation -x^2+4x+3=x^2-x-(1+2x^2)
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Equation ((57.6/(150-x))^0.15)*((150+x)+10)/171.712=1
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Equation 3x+3=5x
- Express {x} in terms of y where:
- -6*x-10*y=19
- 20*x+18*y=-9
- -17*x+2*y=9
- -17*x+2*y=-4
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Identical expressions
- sixteen *x+ nine - four *x= zero
- 16 multiply by x plus 9 minus 4 multiply by x equally 0
- sixteen multiply by x plus nine minus four multiply by x equally zero
- 16x+9-4x=0
- 16*x+9-4*x=O
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Similar expressions
- 16*x+9+4*x=0
- 16x+9-4x²=9
- 16*x-9-4*x=0
16*x+9-4*x=0 equation
The teacher will be very surprised to see your correct solution 😉
The solution
Detail solution
Given the linear equation:
Looking for similar summands in the left part:
Move free summands (without x)
from left part to right part, we given:
$$12 x = -9$$
Divide both parts of the equation by 12
We get the answer: x = -3/4
16*x+9-4*x = 0
Looking for similar summands in the left part:
9 + 12*x = 0
Move free summands (without x)
from left part to right part, we given:
$$12 x = -9$$
Divide both parts of the equation by 12
x = -9 / (12)
We get the answer: x = -3/4
Sum and product of roots
[src]
sum
-3/4
$$- \frac{3}{4}$$
=
-3/4
$$- \frac{3}{4}$$
product
-3/4
$$- \frac{3}{4}$$
=
-3/4
$$- \frac{3}{4}$$
-3/4