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4 years ago

13

Select factors of x^2-x-56

1 answer:

Salsk061 [2.6K]4 years ago

5 0

Answer:

Step-by-step explanation:

x² - x - 56 = x² - 8x + 7x - 7*8

= x*(x - 8) + 7 (x - 8)

= (x - 8) (x + 7)

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Answer:

Option A is correct

Step-by-step explanation:

Given: FH is the altitude to the hypotenuse EG

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Solution:

According to Pythagoras theorem, square of hypotenuse is equal to sum of squares of other two sides.

In $\Delta EHF$ ,

$\angle EHF=90^{\circ}$

So,

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Put EH = 6 units and EF = 7 units

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Option A is correct

Take square root on both sides

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