Question

The roots of 7x^2 + x - 5 = 0 are a and b. Compute (a - 4)(b - 4).

Answer 1

Answer:

Factor x4 – 2x2 – 8

At first glance, this does not appear to be a quadratic — and, in technical terms, it isn't. But this expression is quadratic in form, meaning that it can be restated as a quadratic, it follows the same patterns, and it can be factored by using the same techniques.

Answer 2

Answer:

Refers to the attachment