1.

Factorise : 2x2 + 12 √2x + 35.

Answer»

2x2 + 12 2x + 35 

Product ac = 70 & b = 12 

∴ Split the middle term as 7 2 &5 2

⇒ 2x2 + 12 2x + 35 = 2x2 + 7 2x + 5 2x + 35 

 = 2x[ 2x + 7]+ 5[ 2x + 7] 

 = [ 2x + 5][ 2x + 7]



Discussion

No Comment Found