Question

(a) 2x2 + 11x + 12 factorise​

Answer 1

Answer:

Step-by-step explanation:

Factoring  2x2-11x-12  

The first term is,  2x2  its coefficient is  2 .

The middle term is,  -11x  its coefficient is  -11 .

The last term, "the constant", is  -12  

Step-1 : Multiply the coefficient of the first term by the constant   2 • -12 = -24  

Step-2 : Find two factors of  -24  whose sum equals the coefficient of the middle term, which is   -11 .

     -24    +    1    =    -23  

     -12    +    2    =    -10  

     -8    +    3    =    -5  

     -6    +    4    =    -2  

     -4    +    6    =    2  

     -3    +    8    =    5  

     -2    +    12    =    10  

     -1    +    24    =    23  

Answer 2

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