Question

x(10x-2)=3 use quadratic formula to solve this.

Answer 1

Please help me with this someone? Please, i need to get this done in four hours.

Answer 2

Expand the expression and rearrange\[10x^2-2x-3=0\]

Answer 3

I suppose you already know how to complete the square? Seems the purpose of this homework is to train you on it.

Answer 4

i have what you typed so far

Answer 5

she didnt teach us to complete the square we skipped that

Answer 6

she said we have to solve using quadratic formula

Answer 7

Oh! Okay.

Answer 8

Well, you can see that a = 10, b=-2 and c = -3.

Answer 9

yes

Answer 10

\[\frac{-(-2)\pm\sqrt{(-2)^2-4(10)(-3)}}{2(10)}\]

Answer 11

\[\frac{2\pm\sqrt{4+120}}{20}\]

Answer 12

\[\frac{1}{10}\pm\frac{\sqrt{31}}{10}\]

Answer 13

How did you get that

Answer 14

\[\frac{2}{20}=\frac{1}{10}\]and

Answer 15

\[\frac{\sqrt{124}}{20}=\frac{\sqrt{4\cdot31}}{20}=\frac{2\sqrt{31}}{20}=\frac{\sqrt{31}}{10}\]

Answer 16

\[2+-2\sqrt{31}/10\]

Answer 17

This part bugs me a lot

Answer 18

/20 i mean

Answer 19

\[\frac{2\sqrt{31}}{20}=\frac{2}{20}\sqrt{31}=\frac{1}{10}\sqrt{31}=\frac{\sqrt{31}}{10}\]

Answer 20

what happened to the other 2?