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Factorise : 2x2 + 12 √2x + 35.

Answer»

2x2 + 12 √2x + 35 

Product ac = 70 & b = 12 √2 

∴ 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]



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