FIND THE VALUE OF THE EXPRESSION WHEN Z= 3 X^2+5X+6 ________ X^2-8X-12 TYPE AN I

Question

FIND THE VALUE OF THE EXPRESSION WHEN Z= 3                                                                                                                   X^2+5X+6                                                                                                                                                                                             ________                                                                                                                                                                                                X^2-8X-12                                                                                                                                                                                              TYPE AN INTEGAR OR A SIMPLIFIED FRACTION.

Explanation / Answer

f(x) = ( x^2+5x +6)/(x^2 -8x -12)

find the value when x= 3

plug x=3;

f(3) = (3^2 +5*3 +6)/(3^2 -8*3 -12)

= (9+15+6)/(9 -24-12)

= (30/-27)

= 10/-9

= -10/9

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