Question

I dont understand this
Using the discriminant how many real number solutions does this equation have
3x^2-2=5x

Answer 1

ax2+bx+c=0 discriminate=b*b-4ac find it

Answer 2

what is value

Answer 3

So I would set it up how

Answer 4

a=3,b=-5,c=-2 so D=-5*-5-4*3*-2=25+24=49 taking sqrt give 7 and -7 so two real solution because 7 and -7

Answer 5

3x^2-5x-2=0 compare with ax^2+bx+c=0 give value of a,b,c.

Answer 6

So you solve it normally and take the square root

Answer 7

3 -5 2

Answer 8

since D*D=b*b-4*a*c if this value is -ve then U can not find sqrt of D then no real solution .

Answer 9

it give no. of solution not solution of x.

Answer 10

Oh ok that makes some sense thank you for helping me