Question

PLEASE HELPPPPPPPPPPP =(

(2x-1)^2+5(2x-1)=24

Answer 1

do you have any idea what to do or how to start?

Answer 2

you will be using the distributive property to start to expand the equation and than combine like terms and solve for x

Answer 3

no

Answer 4

it didn't work out

Answer 5

first of all expand (2x-1)(2x-1) can you distribute this?

Answer 6

yea but im telling u it doesn't work

Answer 7

4x^2-2x-2x+1 = 4x-4x+1

Answer 8

4x^2-4x+1

Answer 9

correct that is the first part now distribute 5(2x-1)

Answer 10

10x-5

Answer 11

ok so if you add them together what do you have?

Answer 12

what about the 24

Answer 13

we are just working with the left side. whatever you get on the left side should = 24 so just be carrying the 24 down

Answer 14

4x^2+6x-5

Answer 15

-4

Answer 16

correct your equation should be 4x^2+6x-4=24

Answer 17

-28?

Answer 18

yes 4x^2+6x-28=0

any idea whats next?

Answer 19

nope

Answer 20

write it in factor form

Answer 21

depends how you learn it, you can use the quadratic formula but it thinks its longer or just write it in factor form, do you know how do any?

Answer 22

\[ax ^{2}+bx-c=(a+b)(a-b)\] is this true?

Answer 23

no i dont can u help me?

Answer 24

correct, so if you do what what would you get?

Answer 25

ok well you would take the 4x^2+6x-28=0
I divided the whole equation by two to reduce the large numbers which = this
2x^2+3x-14=0
than factor it to (x-2)(2x+7)=0

Answer 26

whoa...

Answer 27

did i confuse you?

Answer 28

yes

Answer 29

sorry, can you see that the whole equation is divisible by 2? i just did this to reduce the large numbers.

Answer 30

okay gotcha

Answer 31

ok good, and factoring it out i used the equation you showed me earlier, ax2+bx−c=(a+b)(a−b) to get the (x-2)(2x+7)=0.

Answer 32

sorry don't see why it shows like that but i used the equation you showed me earlier to factor the equation 2x^2+3x-14=0

Answer 33

i see nothing but little squares

Answer 34

use the equation ax^2+bx-c=(a+b)(a-b) to factor the 2x^2+3x-14=0 equation.

Answer 35

i got x^2=3 and x^2=4

Answer 36

oops 9 not 3

Answer 37

um not quite, a*a should equal your first ten which should be 2 so numbers multiply that equal 2 are what? 1 and 2 correct?

Answer 38

*term

Answer 39

b*b should equal your 3rd term, and the product a*b+b*a should equal your middle term.

Answer 40

im confused im just gonna go to the school tutor

Answer 41

it is difficult concept but if you factor it you will get (x-2)(2x+7)=0 and if you set each =0 like this:
x-2=0
2x+7=0
and solve for x in each equation you will get:
x=2
x=-7/2

Answer 42

goodluck! :)