Find the value of x both the polynomial x²-x-6 and 3x²+8x+4 become zero?
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Given polynomials :
- x² - x - 6
- 3x² + 8x + 4
To Find :
- Value of x for which the polynomials become zero.
Solution :
First figure out the value of x of the first polynomial.
We can do so by using the factorization method.
We have two values of x.
Now, moving to the next polynomial.
Figure out value of x using factorization method here too.
Here, we have
From equation (1) and (2), we clearly see x = -2 is the value for which both the polynomials become zero.
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