Question

the sum of a number and twice its square is 6. Find the number

Answer 1

let the number be 'x'
sum of a number and twice its square = x+2x^2
so, 2x^2 + x=6
so, 2x^2 +x-6=0
can you solve this quadratic by using the formula i gave you ?

Answer 2

Okay wait

Answer 3

do you want me to post that formula again ?

Answer 4

2 and -3/2

Answer 5

Nope i got the formula :)

Answer 6

-3/2 and 2 is this right?

Answer 7

the signs are the other way around: -2 and 3/2

Answer 8

isn't it -2 and +3/2 ??

Answer 9

Oh i'm sorry i forgot the negative sign in 1

Answer 10

if that number is integer , then only -2 is the solution, but if its real number then both -2 and 3/2 are answers.

Answer 11

Thanks again!

Answer 12

welcome again!