OpenStax, Elementary Algebra 2e §7.2 Factor Trinomials of the Form x2+bx+c · Exercise 71 · Algebra · Factoring

Factor Trinomials of the Form x2+bx+c · Exercise 71

Will factored $x^{2} - x - 20$ as $(x + 5) (x - 4)$ . Bill factored it as $(x + 4) (x - 5)$ . Phil factored it as $(x - 5) (x - 4)$ . Who is correct? Explain why the other two are wrong.

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OpenStax, Elementary Algebra 2e · §7.2 Factor Trinomials of the Form x2+bx+c · Exercise 71

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