Step-by-step explanation:
no.1 first write the equation
the write the sum and the product
so the sum will be 8x and the product
will be 15.In the product part look for a no
that when you multiply it by another no
it will give you 15 by when you add it will
become 8.The no.is 5 and 3.you now rewrite the equation x^2+3x+5x+15=0
you now simply the equation x(x+3)+5(x+3)
you take (x+3)and (x+5)=0.
your answer will either be -3or-5 respectively
