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2021-10-14
$$x^3 - x^2 - 4x + 4 = 0$$ Why can’t this cubic have only 2 real solutions??
Because that would leave one complex root which isn’t allowed as roots only come in pairs.
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date: 2021-10-14 19:19
summary: how many real solutions does 8^x + 4 = 4^x + 2^(x + 2) have?
tags:
- '@?public'
- '@?mat'
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- '@?maths'
title: MAT - Paper 2007 - Q1F