Question

Solve:
w^2-7w-8=0
it ask what the solution is for w

Answer 1

(w-8)(w+1)=0
w=8
w=-1

Answer 2

Does it matter how it is written (-1,8) or (8,-1)

Answer 3

(-b(+-)sqrt(b^2-4ac))/2a.

a=w^2 = 1
b=-7w = -7
c=-8

w= (7+-sqrt(49-4*(1*-8)))/2 = (7+-sqrt(81))/2 = (7+-9)/2 = 16/2 and -2/2 => w=8 V w=-1

It doesn't matter which order you write the answers.

Answer 4

V means "and" in mathematical notation. Just wanted to avoid any confusion.

Answer 5

oh ok