<p>Does 3i^2 - i = 2i^2?
Does the square still exist?</p>
<p>Also. Can ‘have’ be used in a singular as well as a plural sense?</p>
<p>Ex.
I have a pencil.
I have many pencils.</p>
<p>Does 3i^2 - i = 2i^2?
Does the square still exist?</p>
<p>Also. Can ‘have’ be used in a singular as well as a plural sense?</p>
<p>Ex.
I have a pencil.
I have many pencils.</p>
<p>3i^2 - i = -3 - i.</p>
<p>And yes. “Have” doesn’t depend on the direct object.</p>