Question

It's the 2nd question I know how it is done ....sum and product method but the root is confusing me can any one explain me plz

Answer 1

Hey,
2x^2 + 3root5x + 5
Here the product=10
And,sum=3root5
=>2x^2+2root5x+root5x+5
=>2x(x+root5)+ root5(x+root5)
=>(2x+root5)(x+root 5)