1.

Find the following products:(y - 4) (y + 3)

Answer»

Using the identity : (x + a) (x + b) = x2 + (a + b) x + ab, we have 

(y - 4) (y- 3) = {y + (-4)} {y+ (-3)} 

 = y2 + {(-4) + (-3)}y + (-4) × (-3) 

 = y2 - 7y + 12 



Discussion

No Comment Found