The length of a rectangle is 4 times the length of a smaller rectangle. The 2 rectangles have the
same width. The area of the smaller rectangle is X
square units. The area of the larger rectangle is yX
square units. Which of the following is the value
of y?

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225

yes

step-by-step explanation:

hm let me think hm think think hm think yes

let's call the solutions x₁ = (5 - 2√7)/3 and x₂ = (5 + 2√7)/3

then the equation is (x-x₁)(x-x₂) = 0

if you fill that in you get a lot of numbers which you can recognize as ax²+bx+c=0.

step-by-step explanation:

you can see that a=1 (there is just an x²)

b = (-5 -2√7 + 2√7 - 5)/3 = -10/3

c = -2√7)/3 ) * (-5+2√7)/3) = -1/3

so your answer is 3x^2 – 10x – 1 = 0