Question

find the factor of this
x
${x}^{2}$
$-$
2
$\sqrt{5x}$
$-$
15

Answer 1

x²-2√5x-15

=>x²-3√5x+√5x-15

=>x(x-3√5)+√5(x-3√5)

=>(x+√5)(x-3√5)

zeros:-

(x+√5)=0
x=-√5

(x-3√5)=0
x=3√5

@Altaf