Math, asked by sandeep71kalsi72, 16 hours ago

4x²- 12 + 9 solve the sum by using splitting method​

Answers

Answered by jafirajafa
2

Answer:

Step-by-step explanation:

The first term is,  4x2  its coefficient is  4 .

The middle term is,  +12x  its coefficient is  12 .

The last term, "the constant", is  +9  

Step-1 : Multiply the coefficient of the first term by the constant   4 • 9 = 36  

Step-2 : Find two factors of  36  whose sum equals the coefficient of the middle term, which is   12 .

     -36    +    -1    =    -37  

     -18    +    -2    =    -20  

     -12    +    -3    =    -15  

     -9    +    -4    =    -13  

     -6    +    -6    =    -12  

     -4    +    -9    =    -13  

     -3    +    -12    =    -15  

     -2    +    -18    =    -20  

     -1    +    -36    =    -37  

     1    +    36    =    37  

     2    +    18    =    20  

     3    +    12    =    15  

     4    +    9    =    13  

     6    +    6    =    12    That's it

Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above,  6  and  6  

                    4x2 + 6x + 6x + 9

Step-4 : Add up the first 2 terms, pulling out like factors :

                   2x • (2x+3)

             Add up the last 2 terms, pulling out common factors :

                   3 • (2x+3)

Step-5 : Add up the four terms of step 4 :

                   (2x+3)  •  (2x+3)

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