Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation 2x^2-8=0
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Equation 8x-15=-12+5x
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Equation 5*(x+9)=-8
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Equation 7(x-1)=3x
- Express {x} in terms of y where:
- -2*x-7*y=3
- -15*x-15*y=12
- 10*x-13*y=16
- 12*x+1*y=11
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Identical expressions
- x* two +7x- eighteen = zero
- x multiply by 2 plus 7x minus 18 equally 0
- x multiply by two plus 7x minus eighteen equally zero
- x2+7x-18=0
- x*2+7x-18=O
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Similar expressions
- x^3+10x^2+7x-18=0
- (x^3+4)*(x^2+7*x-18)=0
- (x^3)+10(x^2)+7x-18=0
- x*2+7x+18=0
- x*2-7x-18=0
- x^3+11x^2+7x-18=0
x*2+7x-18=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:
$$9 x = 18$$
Divide both parts of the equation by 9
We get the answer: x = 2
x*2+7*x-18 = 0
Looking for similar summands in the left part:
-18 + 9*x = 0
Move free summands (without x)
from left part to right part, we given:
$$9 x = 18$$
Divide both parts of the equation by 9
x = 18 / (9)
We get the answer: x = 2