asma6281202472 asma6281202472

09-09-2020
Mathematics

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If x power 2 - x- 6 and x power 2+3x- 18 have a common factor ( x -a ) then find the value of a

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jimrgrant1 jimrgrant1

09-09-2020

Answer:

a = 3

Step-by-step explanation:

Factorise both expressions\x² - x - 6 = (x - 3)(x + 2)

x² + 3x - 18 = (x - 3)(x + 6)

Thus both expressions have a common factor of (x - 3) , thus

a = 3

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