Aim: How do we use quadratic formula to solve equation?

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Presentation transcript:

Aim: How do we use quadratic formula to solve equation? Do Now: 1. Solve for x: 2. Solve for x: 3. Solve for x:

The standard form of a quadratic equation is # 3 is little hard to factor, therefore, we can use a different method to solve it. The standard form of a quadratic equation is where a, b,c are real numbers and Let’s solve by completing square

This is called quadratic formula, and we can use it to solve any quadratic equation

Let’s try to use the quadratic formula to solve First of all, we need to identify the values of a, b and c a = 4, b = – 5 and c = – 6

Solve for x:

Solve for x:

Solve for x: 1. 2. 3.