POLQ 1 | Lesson 3 | Solutions (Rational Roots Theorem)

Solutions:

a) \((x +1) (x^2+12x +11) = (x +1) (x+1) (x+11)\)

Rational Roots  \(x = -1, -1\) and \( -11\)

b) \((x+1) (x^2 +3x + 2) = (x+1) ( x+1) (x +2)\)

Rational Roots are \(x = -1, -1, -2\)

c) \((x+1) (5x^2 +24x – 5) = (x+1) (5x-1) (x+5)\)

Rational Roots are \(x = -1, 1/5, -5\)

Graph: 

 

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