Question

Product of a number and 2 more than that one number goves 168 find the number

Answer 1

let the no. be x and x+2

so

x(x+2)=168

x²+2x-168=0

x²+14x-12x-168=0

x(x+14)-12(x+14)=0

(x+14)(x-12)=0

so x=12,-14

if x=12

then 2nd no. is 12+2=14

if x=-14

then 2nd no. is -14+2=-12

Answer 2

Answer:

x=12

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