Factorize:
7x2 – 19x – 6
Given,
7x2 – 19x – 6
Now, first we have to find out the numbers whose-
Sum = - 19 and
Product = 7 × - 6 = - 42
The numbers are 21 and 2,
So,
7x2 – 19x – 6
= 7x2 – 21x + 2x – 6
= 7x(x – 3) + 2(x – 3)
= (x – 3)(7x + 2)
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