Question

how to find the roots or desired value of a variable asked in the question. if they mentioned that the equation has real and negative roots

Answer 1

Step-by-step explanation:

one is hit and trial method. You can give random values for the variable and check whether the answer is zero or not, in other words if it is a root of the polynomial or not. Another is through long division which as an advice don't use it unless absolutely necessary. It takes time. Another method is factorisation method. Find any one root first and change it to ( x - a) = 0 . If this ' a ' is a zero of the polynomial then use it to factorise it. It's a good method and easy if you get all the multiplications and additions right.

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