18;45 = 9
24;16 = 8
I hope this helps
Answer:
acc to ques....perimeter of figure= 3a^2+15a+9
let missing dimension be x
= x+10a-2+a^2-7+5a=3a^2+15a+9
x+15a+a^2-9=3a^2+15a+9
x=2a^2+18
Hello,
y=x²-10x+7=x²-2*5x+25-25+7=(x-5)²-18
================================
So, we know that:

We also know that
. We will use that fact to find
in terms of
and
.

Therefore:

Answer: i've heard about it but i'm not too much into it