A.)5 x 10^-2, b.) 7.5 x 10^3. how many times greater is b compared to a?

7.5 x 10^3/5 x 10^-2

7.5/5  * 10^(3-(-2))  divide the numbers subtract the exponents

1.5 *10^5

hello from mrbilldoesmath!

answer:

x - 3

discussion:

x^2 - 9 = (x-3) (x+3)   so

(x^2-9)/ (x + 3) = x-3

you,

mrb

-6 is the correct option from the above given options