Solve the Quadratic

Solve for x.

x^2- x=20

Solution 1:
Solution 2:

Solution 1:

Solution 2:

Step-by-step explanation:

The first is organize the given equation to the next form

So you substract -20 in both sides of the equation

Know you can use the quadratic formula or find two number that sum give us and multiplied .

Replacing with the given values we have:

With a trial and error the numbers are -5 and 4. Then you change the equation to

And the equation is equal to 0 when   is equal to 5 and -4.

24

step-by-step explanation:

the graph shows 30% of students walk. 80 students were questioned, so the number that said they walk is

30% × 80 = 0.30 × 80 = 24