Select the quadratic that has roots x=8 and x=-5

When a formula is solved for a particular variable, several different equivalent forms may be possible. if we solved a=1/2bh for h, one possible correct answer is h=2a/b . which one of the following is not equivalent to this? a. h= 2(a/b) b. h= 2a(1/b) c. h= a/1/2b d. h= 1/2a/b

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?

3x = 729 solve for x plz . it's urgent. will mark