IMAT Factorisation of polynomials questions

Sample questions

1. 1IMAT Doutor

   Which of these cannot be factorised into linear factors with real coefficients?
   1. A$x^2-1$
   2. B$x^2-2x$
   3. C$x^2+2x+1$
   4. D$x^2-4$
   5. E$x^2+1$
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2. 2IMAT 2025 Q51

   The trinomial a² − 4ab + 4b² is equal to:
   1. A2(a + b)²
   2. B(a − 2b)²
   3. Ca² − b²
   4. Da² + b²
   5. Ea² + b²
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