Answered

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a^2-ab-b^2,if a=1 and b= -1.

Sagot :

olumideolawoyin

Answer:

1

Step-by-step explanation:

a² - ab - b² if a = 1 and b = - 1

= 1² - (1 × - 1) - (-1)²

= 1 - (-1) - (1)

= 1 + 1 - 1

= 2 - 1

= 1

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