Pertanyaan

P er ha t ikan p er n y a t aan d i ba w ah ini ! ( I ) 2 x 2 + x − 3 = ( 2 x + 3 ) ( x − 1 ) ( II ) x 2 + x − 6 = ( x − 3 ) ( x + 2 ) ( III ) 4 x 2 − 9 = ( 4 x + 3 ) ( x − 3 ) ( I V ) 6 x 2 − 15 x = 3 x ( 2 x − 5 ) P er n y a t aan y an g b e na r a d a l ah .....

  1. (I) dan (III)

  2. (II) dan (IV)

  3. (I) dan (IV)

  4. (III) dan (IV)

R. RGFLSATU

Master Teacher

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Pembahasan

open table attributes columnalign right end attributes row cell I. space 2 x squared minus x minus 3 equals left parenthesis 2 x minus 3 right parenthesis left parenthesis x plus 1 right parenthesis  space space space left parenthesis 2 x minus 3 right parenthesis left parenthesis x minus 3 right parenthesis  space space space equals 2 x squared plus 2 x minus 3 x minus 3  space space space equals 2 x squared minus x minus 3 end cell row blank end table close curly brackets space B e n a r space left parenthesis S e s u a i space p e r n y a t a a n right parenthesis  open table attributes columnalign right end attributes row cell I I. space x squared plus x minus 6 equals left parenthesis x minus 3 right parenthesis left parenthesis x plus 2 right parenthesis  space space space space left parenthesis x squared minus 3 right parenthesis left parenthesis x plus 3 right parenthesis  space space space equals x squared plus 3 x minus 3 x minus 9  space space space equals x squared minus 9 end cell row blank end table close curly brackets space S a l a h space left parenthesis T i d a k space s e s u a i space p e r n y a t a a n right parenthesis  open table attributes columnalign right end attributes row cell I I I. space 4 x squared minus 9 equals left parenthesis 4 x plus 3 right parenthesis left parenthesis x minus 3 right parenthesis  space space space space left parenthesis 4 x plus 3 right parenthesis left parenthesis x minus 3 right parenthesis  space space space equals 4 x squared minus 12 x plus 5 x minus 9  space space space equals 4 x squared minus 7 x minus 9 end cell row blank end table close curly brackets space S a l a h space left parenthesis T i d a k space s e s u a i space p e r n y a t a a n right parenthesis  open table attributes columnalign right end attributes row cell I V. space 6 x squared minus 15 x  space space space equals 3 x to the power of blank left parenthesis 2 x minus 5 right parenthesis  space space space equals 6 x squared minus 15 x end cell row blank end table close curly brackets space B e n a r space left parenthesis S e s u a i space p e r n y a t a a n right parenthesis

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