Write the numerical expression for add 19 and 2, then divide by 7.
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Answer:
<h2>x = -2 or x = 5</h2>Step-by-step explanation:
The quadratic formula of a quadratic equation
We have:
If is divided by
, then
for some polynomials
. Moreover,
(because
), so there exists
such that
for all
. But if we calculate
, it turns out that
, so
.