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simplify the x²+7x-18 all over x²-4​

Sagot :

Answer:

x + 9 / x + 2

Step-by-step explanation:

x²+7x-18  /  x²-4​ = 0

x²+7x-18=0        x²-4​ = 0

( x − 2 ) ( x + 9 ) = 0       ( x + 2 ) ( x − 2 )=0

simply cancel  ( x − 2 ) from both numerator and denominator

then the answer will be

x + 9 / x + 2