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4 votes
X2 - 15x + 56

factor​

User MTorres
by
6.7k points

1 Answer

5 votes

Answer:

(x - 7)(x - 8)

Explanation:

To factorise the quadratic

Consider the factors of the constant term (+ 56) which sum to give the coefficient of the x- term (- 15)

The factors are - 7 and - 8, since

- 7 × - 8 = + 56 and - 7 - 8 = - 15, hence

x² - 15x + 56 = (x - 7)(x - 8)

User Sourcedelica
by
6.0k points
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