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for 99.99% of jobs, you will never need to know algebra or the formulas or how they work. 97% of all jobs use 6th grade math or less to do their jobs. Only a TINY fraction of 1% of jobs, like theoretical Physics needs to know algebra. Computer programming is mostly done by the COTS method and only a tiny fraction of programmers or engineers ever use Algebra. It is a complete waste of time to take algebra classes in HS or College unless you plan to be in the tiny percentage of theoretical science jobs. Certainly the same is true of any higher math above algebra, like trig or calculus. 50 years ago before today's computers and software and apps, anyone who knew higher math had a great advantage in getting a job. But today it is meaningless to know for over 97% of the jobs in the current technology world. The largest number of people who need to know algebra are algebra teachers. That is like saying the people who need to know how to cook on a potbellied wood burning stove are people who teach others how to cook on pot bellied wood burning stoves.
2y2 + 9y - 2 this will not factor using integers what is what most algebra teachers will tell you is 'prime'but ... make an equation ... 2y2 + 9y - 2 = 0use the quadratic formula to solvey = [-9 (+/-) sq rt (81 -4x2(-2))] / (2x2)y = [-9 (+/-) sq rt (97)] / (4) now separate thesey = [-9 + sq rt (97)] / (4)y = [-9 - sq rt (97)] / (4) rewrite as equal to zero(y - [-9 + sq rt (97)] / (4)) =0(y - [-9 - sq rt (97)] / (4)) = 0 apply zero product property in reverse(y - [-9 + sq rt (97)] / (4))(y - [-9 - sq rt (97)] / (4)) = 0these, as weird as they may look, are the factors.
√97
228 inches, what you do is add, 97+97+17+17
19.4