Mister Exam
Other calculators
-
How to use it?
- Equation:
-
Equation x^2+2*x+10=0
-
Equation 2^4-2*x=64
-
Equation x^2+3*x+9=0
-
Equation 8,4(y-17,9)=4,2
- Express {x} in terms of y where:
- -18*x-3*y=2
- 5*x+20*y=-4
- 20*x-8*y=13
- -16*x+18*y=9
- Sum of series:
-
22
- Expression:
- 22
-
Identical expressions
- twenty-two = four (eight -2x)-10x
- 22 equally 4(8 minus 2x) minus 10x
- twenty minus two equally four (eight minus 2x) minus 10x
- 22=48-2x-10x
-
Similar expressions
- (x+2)*4+28=(x-2)*2
- x^4=(x-2)^2
- 4(6x+11)-14=2(2x-5)
- 22=4(8+2x)-10x
- (x+2)^2=(x-4)^2
- (x+1)(x-1)=(x+2)^2
- 22=4(8-2x)+10x
22=4(8-2x)-10x equation
The teacher will be very surprised to see your correct solution 😉
The solution
Detail solution
Given the linear equation:
Expand brackets in the right part
Looking for similar summands in the right part:
Move free summands (without x)
from left part to right part, we given:
$$0 = 10 - 18 x$$
Move the summands with the unknown x
from the right part to the left part:
$$18 x = 10$$
Divide both parts of the equation by 18
We get the answer: x = 5/9
22 = 4*(8-2*x)-10*x
Expand brackets in the right part
22 = 4*8-4*2*x-10*x
Looking for similar summands in the right part:
22 = 32 - 18*x
Move free summands (without x)
from left part to right part, we given:
$$0 = 10 - 18 x$$
Move the summands with the unknown x
from the right part to the left part:
$$18 x = 10$$
Divide both parts of the equation by 18
x = 10 / (18)
We get the answer: x = 5/9
Sum and product of roots
[src]
sum
5/9
$$\frac{5}{9}$$
=
5/9
$$\frac{5}{9}$$
product
5/9
$$\frac{5}{9}$$
=
5/9
$$\frac{5}{9}$$
5/9