Question

$x^{2} +17x-30=0$

Answer 1

Remember x^2-Sumx+product
I.e. x^2-Sx+p

Here we need to make factors of -30
And they are -2,-15
So above eqn can be written as
x^2-2x-15x+30=0
x(x-2)-15(x-2)=0
(x-2)(x-15)=0
x=2,15 ans...