Question

how do i find the solutions for x2 + 3x − 18 = 0 @jim_thompson5910

Answer 1

x^2 + 3x - 18 = 0

factors to

(x+6)(x-3) = 0

Answer 2

now use the zero product property to solve

Answer 3

what is that ?

Answer 4

zero product property

if A*B = 0

then

A = 0 or B = 0

Answer 5

example

(x+7)(x-5) = 0

turns into

x+7 = 0 or x-5 = 0

Answer 6

ohh ok

Answer 7

x + 6 = 0 or x - 3 = 0

Answer 8

good, keep going

Answer 9

if x+6 = 0, then x must be?

Answer 10

-6

Answer 11

good

Answer 12

do the same for x-3=0 to get the other solution

Answer 13

3

Answer 14

perfect

Answer 15

your two solutions are

x = -6 or x = 3

Answer 16

thanks :)

Answer 17

the hardest part is probably factoring huh?

Answer 18

if so, then I recommend you practice that some more