Sariyahhall1
06.07.2021 •
Mathematics
Solve |5x+30|=10x ......
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Ответ:
Option A
Step-by-step explanation:
We need to solve out ,
We can write it as ,
On simplyfing further,
On solving the above equation , we will get ,
Now we know that the value of modulus is never negative so when we will put x is equal to 2 on the RHS we will get -20 which is not possible . Therefore , the extraneous root is -2 .
Option A is correct .
Ответ:
All ordered pairs which are in the form of (a,2a), are the solution of the equation .
Step-by-step explanation:
The given equation is
Add x both sides.
Subtract 3y from both sides.
Divide both sides by 2.
All the points that satisfy this equation are the solution for the equation.
Put x=a, where a can any real number.
The value of y is 2a, therefore the ordered pair is in the form of (a,2a).