Remember revese distributeive
ab+ac=a(b+c)
factor out
(a^2)(x+3)+(-4)(x+3)
undistribute (like rreverse distribute where (x+3)=a)
(a^2-4)(x+3)
we can stil factor a^2-4 into a^2-2^2=(a-2)(a+2)
(a-2)(a+2)(x+3)
The correct answer would be J
The form (x - p)^2 = q is the form that completing the square will leave us with.
---Add 5 to both sides
x^2 - 8x = 5
---Divide the b term by 2, and square it. Then, add that number to both sides.
-8/2 = -4
(-4)^2 = 16
x^2 - 8x + 16 = 5 + 16
x^2 - 8x + 16 = 21
---Factor!
(x - 4)^2 = 21
p = 4
q = 21
Hope this helps!! :)
100 is what percent of 800 would be 12.5%, yw ^^