Week 6 in Pre-Calculus

In this week I learned how to solve a quadratic equation. A quadratic equation is a equation which the variable in it has a power of 2 or more. In order to solve it, we first have to make one side of the equation’s to zero. For ex. (x+5)(x-7)=0

Now we have a equation, which in it the, the multiplication of two brackets evens to zero. That means one the brackets worths zero. Either x+5=0 or x-7=0. we have to solve these to new equations.

x+5=0 ==> x=-5

x-7=0 ==> x=7

both of these answers are correct and it can be any of them.

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