Answer:
never, it will always be x²+6x+9
Step-by-step explanation:
if you expand (x+3)² you will always get:
x² + 3x + 3x + 9, which simplifies to x² + 6x + 9
x = 180 - (31 + 40)
56 5/8
453/8
Not positively sure but I believe it goes like this
Answer: 9x+26+5x=180
14x+26=180
180-26=14x
14x=154
X=15
