Question

Multiply (2y2 -5y + 4) by ( y2 +7y-8)
No wrong answer pls

Answer 1

Answer:

Step-by-step explanation:

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

Step-2 : Find two factors of  12  whose sum equals the coefficient of the middle term, which is   -7 .

     -12    +    -1    =    -13  

     -6    +    -2    =    -8  

     -4    +    -3    =    -7    That's it

Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above,  -4  and  -3  

                    y2 - 4y - 3y - 12

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

                   y • (y-4)

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

                   3 • (y-4)

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

                   (y-3)  •  (y-4)

            Which is the desired factorization