Question

Could anybody help me solve this question?
What is the solution set of 2x^2 + x = 15?
{3, -5/2}
{-3, 5/2}
{2, -3/2}

Answer 1

a

Answer 2

Could you show me how you got that?

Answer 3

i can

Answer 4

Thank you!

Answer 5

take 15 in left side
2x^2 -x -15 = 0

Answer 6

then
2x^2 -6x + 5x - 15 = 0

Answer 7

take common
2x (x -3) +5 ( x - 3 )

Answer 8

(2x + 5 ) ( x - 3 )

Answer 9

2x + 5 = 0
2x = -5
x = -5 / 2

Answer 10

x-3 = 0
x=3

Answer 11

did this help or not