9n * 3n-3 It's on exponents and multiplication
I'm willing to give out brainliest(Probably), 5 stars, and a thanks to whoever is correct and give out 15 pts
DON'T SCAM ME AND I GET IT WRONG OR ELSE YOU ARE GETTING REPORTED

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

you're missing vital information, add to it so we can solve this problem for you.

step-by-step explanation:

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225

x equals 1

step-by-step explanation:

f(4)=f(×)

x=1