SOLUTION: 2X^2 -7X=9 THIS IS AN EXAMPLE OF QUADRATIC BY COMPLETING THE SQUARE I THEN GET X^2 - 7/2X = 9/2 BECAUSE I DIVIDE BY 2 TO GET X^2 - 7/2X + 49/16 = 9/2+ 49/16 TO GET (X

Algebra ->  Quadratic Equations and Parabolas -> SOLUTION: 2X^2 -7X=9 THIS IS AN EXAMPLE OF QUADRATIC BY COMPLETING THE SQUARE I THEN GET X^2 - 7/2X = 9/2 BECAUSE I DIVIDE BY 2 TO GET X^2 - 7/2X + 49/16 = 9/2+ 49/16 TO GET (X      Log On


   

Question 227096: 2X^2 -7X=9 THIS IS AN EXAMPLE OF QUADRATIC BY COMPLETING THE SQUARE

I THEN GET X^2 - 7/2X = 9/2 BECAUSE I DIVIDE BY 2
TO GET X^2 - 7/2X + 49/16 = 9/2+ 49/16

TO GET (X - 7/4)^2 =121/16 WHY DOES (X-7/4)^2 = 121/16 I KNOW THAT 4 ^2 EQUALS 16 BUT HOW DID MY BOOK GET THE 121
Answer by josmiceli(19441) About Me  (Show Source):