The quadratic formula works for every quadratic equation, with no exception. Other methods are often tedious and time-consuming, such as completing the square, and others don't work in all situations, such as factoring. Being universal, the quadratic equation becomes an essential tool to solve any quadratic function with little to no thinking, due to the simple solving nature of it.
<em>Six (6)</em> different pizzas can be made with one vegetable and one meat.
They are:
1). broccoli, pepperoni
2). broccoli, sausage
3). peppers, pepperoni
4). peppers, sausage
5). onions, pepperoni
6). onions, sausage
Estimate = 700 lbs
Real bear = 634 lbs
Difference = (700 - 634) = 66 lbs
The estimate is <em>66 pounds more</em> than the actual weight.
The estimate is 10.4% too high.
The actual bear weighs 9.4% less than the estimate.