Question

When this equation 5×^2-6×-2=0 is solve by the method of completing square then why he does not complete in the method of quadratic formulla

Answer 1

Both the methods can be used to solve a quadratic equation , but as we know in mathematics we need to find a method that will take less time to solve.

As you are in 10th standard you are not given difficult equations to solve, so it seems easy to solve it by quadratic formula , but actually it becomes difficult to use quadratic formula when the equations become complex by square roots.

Hence, you are studying both the methods so that you can solve equations using any formula in MCQ and objective question to consume less time.