Question

9 is added to the product of two consecutive multiples of 6 gives 625. what are the numbers?​

Answer 1

Step-by-step explanation:

Let the multiples of 7x&7(x+1)

(7x)

2

+(7(x+1))

2

=637

⇒49x

2

+49(x+1)

2

=637

⇒x

2

+(x+1)

2

=13

⇒x

2

+x

2

+1+2x−13=0

⇒2x

2

+2x−12=0

⇒x

2

+x−6=0

⇒(x+3)(x−2)=0

so x=-3 or x=2

no s= -14,-21 no s=14,21