Question

n2+5n+7=7

Answer 1

n^2+5n=7-7
n^2+5n=0
take n common
n(n+5)=0

so,n=0 & -5

Answer 2

thanks :)

Answer 3

yw :)

Answer 4

use this concept in every question don't ask similar question again & again otherwise u will not get the concept :)

Answer 5

alright! I'll try