2. 9x2_72 = 0??
pls answer.
Share
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Answer:
9x^2-72=0
a = 9; b = 0; c = -72;
Δ = b2-4ac
Δ = 02-4·9·(-72)
Δ = 2592
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
x1=−b−Δ√2ax2=−b+Δ√2a
The end solution:
Δ−−√=2592−−−−√=1296∗2−−−−−−√=1296−−−−√∗2√=362√
x1=−b−Δ√2a=−(0)−362√2∗9=0−362√18=−362√18=−22√
x2=−b+Δ√2a=−(0)+362√2∗9=0+362√18=362√18=22√