Can anyone help me figure out my math problem?

Hmm

(9–2x) (5–2x) – 45

(7x) (3x) – 45

21 – 45x

= -24

looks right but its been a while, you just got it positve.

I think you have to foil, combine like terms, subtract then divide out…

Yeah the whole point is getting the X to the other side.

Now to use it in it in a word problem; a landscape architect has included a rectangler flower bed measures 9 feet by 5 feet in her plans for a new building. She wants to use two colors of flowers in the bed. One in the center and the other for a border of the same width on all four sides. If she can get just enough plants cover 24 square feet for the border how wide can the border be?

@XOIIO you can’t take 9 and subtract 2x from it. They aren’t like terms

x=24/32
then simplify more

Bah whatever, I said its been a while.

@XOIIO LOL Bah back ; ) @tocutetolive90 I stink at word problems and negative fractions ; (

It’s okay thanks both of you

(9 – 2x)(5 – 2x) – 45 = 24
then foil
45 – 10x – 18x + 4x^2 – 45 = 24
the 45s cancel
4x^2 – 28x = 24
bring the 24 over
4x^2 – 28x – 24 = 0
then use the quadratic formula

I would solve like this,

(9–2x) (5–2x) – 45 = 24

45–18x-10x+4×2–45=24

4×2–28x-24=0

x2–7x-6=0
————————-

Now, we need to solve this quadratic equation and which will have two roots.

x= [- b(+or-) sqrt(b2–4ac)]/2a

b=-7, a=1 and c=-6

Put these in the above formula.

x=[- (-7) (+ or – ) (sqrt((-7)2–4(1)(-6)]/2*1

Solving this equation you will get

x=7.77 or x=-0.725

Put these in your equation, you will find answer 23.94, which is approximately equal to 24.

Thank u

(9 – 2*x)*(5 – 2*x) – 45 = 24
(9 – 2*x)*5 – (9 – 2*x)*2*x – 45 = 24
45 – 10*x – (18*x – 4*x^2) – 45 = 24
4*x^2 – 28*x = 24
x^2 – 7*x = 6
x^2 – 7*x + 49/4 = 6 + 49/4
(x – 7/2)^2 = 73/4
x – 7/2 = +/- sqrt(73/4)
x = 7/2 +/- sqrt(73)/2
x = (7 +/- sqrt(73))/2