Answer:
Step-by-step explanation:
A quadratic equation can be factorised if and only if there are rational roots.
For any quadratic equation the discriminant decides about the nature of roots.
Thus only if the discriminant is a perfect square we can have rational roots and in this case only factorization is possible.
In the given equation

Since 1 is a perfect square we can factor and solve

Answer:
16
Step-by-step explanation:
Answer:
Step-by-step explanation:
it is important because if you don't then you will be charged more than what you are supposed to pay
Answer:

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Answer:
7.77777777778
Step-by-step explanation: