find two consecutive no whose product is 20
Anonymous:
4 and 5
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Two consecutive number whose product is 20 are
4 and 5
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let
two consecutive no. is x and x+1
from given condition
x(x+1)=20
x^2+x=20
x^2+x-20=0
by factorization method
x^2-5x-4x-20=0
--------- --------
x(x-5)-4(x-5)=0
(x-5)(x-4)=0
(x-5)=0 or (x-4)=0
x=5 or x=4
two consecutive number which are the product of 20 are 5 and 4
two consecutive no. is x and x+1
from given condition
x(x+1)=20
x^2+x=20
x^2+x-20=0
by factorization method
x^2-5x-4x-20=0
--------- --------
x(x-5)-4(x-5)=0
(x-5)(x-4)=0
(x-5)=0 or (x-4)=0
x=5 or x=4
two consecutive number which are the product of 20 are 5 and 4
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