Question

r^2+3r=5

Answer 1

do i write it in standard form?

Answer 2

\[r ^{2} + 3r - 5 = 0\]

Answer 3

a = 1 b = 3 c = -5

Answer 4

r^2+3r-5=0?

Answer 5

use that equation now with the formula to work out what r is

Answer 6

you should get

r = -4.192582403
r = 1.191582403

Answer 7

is this where i use the fraction thing?

Answer 8

yes lol the fraction thing is called the quadratic formula

Answer 9

lol sorry im just use to using terms that help me rem better lol

Answer 10

just remember in the formula where it says -b

if the value of b is already a minus '-' then it will be a positive in the formula

e.g. if b = -3 in the formula you would write 3 instead of -3