3 years ago

X2 - 15x + 56factor

Mathematics

1 answer:

lozanna [386]3 years ago

6 0

Answer:

(x - 7)(x - 8)

Step-by-step 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)

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X2 - 15x + 56factor​

X2 - 15x + 56factor