Question

please find the x-intercept

Answer 1

To find the x intercept of an equation, find the value where y = 0

Answer 2

ok so i plugin y=0 first

Answer 3

ya and solve from there

Answer 4

maybe use quadratic formula

Answer 5

Yes, you need to plug it into the quadratic formula to solve for y = 0

Answer 6

remember FOIL

Answer 7

\(\large x = \frac{-b \pm \sqrt{b^2 - 4\times a\times c}}{2a}\)

Answer 8

^thats for solving \(ax^2 + bx + c = 0\)

Answer 9

figure out a, b, c values and plugin

Answer 10

this formula is easier I think

Answer 11

I will use it now and solve

Answer 12

-b +/- (sqrt)b^2 - 4ac / 2a
-15 +/- (sqrt) 225 + 80 / 2(10)
-15 +/- (sqrt) 265 / 20

The answer is A.

Answer 13

\[\frac{ -15+- \sqrt{305} }{ 20 }\]

Answer 14

yes so it is A

Answer 15

I meant 305 not 265.

Answer 16

thanks @ganeshie8 , @Abbles ,@elementwielder
thanks for helping :)

Answer 17

yes got it A (305)

Answer 18

:) anytime

Answer 19

No problem ;)