
Let's called the input 'z'
When we plug 'z' in the function we get ;

And we know that, this is equal to 19, so ;

Let's rearrange the equation.

So we have a quadratic equation here.
We'll use this formula to solve it :

The formula is used in equation formed like this :

In our equation,
a=2 , b=3 and c=-14
Let's plug in the values in the formula to solve,

So,

So the input can be both, 2 and
Okay, you now a triangle has 180º degrees and to add to 180º, you have to add all the numbers you have like this:
2x+x+90 (the box is 90º)=180º; add like terms like 2x+x
3x+90=180; cancel 90 by subtracting it and also subtract 90 from 180
3x=90;divide 3 to isolate x and also divide 90/3
x=30 :)
He killed those who opposed him
Answer:
1. 5+y
2. 7n
3. x÷y+4
4. According to the Question 5 is subtracted from y which means y-5