2006-11-25 11:09:17 · 6 answers · asked by Paul B 1 in Education & Reference ➔ Homework Help
9a^2 -100 is a polinomial
if it is equals zero it is an equation,i.e
9a^2 -100 = 0
The character "^" means that "a " is at the second power.
It also can be written as: 9a² -100.
If you want to find the value for "a"
so follow the steps 1,2,3 and 4 below:
1) 9a² -100 =0
2) 9a² =100
3) a² =100/9
4) a = SQRT (100/9)
a = 10/3
a' = -10/3
2006-11-25 11:12:42 · answer #1 · answered by Carlos M 7 · 0⤊ 0⤋
9a^2-100
Square root everything to get rid of the ^2:
3a-10
That's as far as you can go.
2006-11-25 11:11:16 · answer #2 · answered by Annie 4 · 0⤊ 0⤋
It all depends on what you are trying to solve for. If it pure algebraic then the solution is straight forward, if it is a finite solution then you have at least one equation missing (or value of "a").
2006-11-25 11:18:48 · answer #3 · answered by m m 2 · 0⤊ 0⤋
if a^ ( does not divide ), then there exists some smallest exponent such that 9 divides . Hence 1000
2006-11-25 11:22:50 · answer #4 · answered by jumbo remote 2 · 0⤊ 0⤋
9a^2-100
=(3a)^2-(10)^2
=(3a+10)(3a-10)
2006-11-25 13:17:20 · answer #5 · answered by alpha 7 · 0⤊ 0⤋
you cant answer it unless its equal to 0 and are you factoring? using FOIL?
2006-11-25 11:30:04 · answer #6 · answered by Whatevahh 2 · 0⤊ 0⤋