Question

the length of a rectangle is 6 meters more than its width. if the area is 91 square meters, what is the length and width?

Answer 1

this is in regards to quadratic equatons

Answer 2

l=w+6
w*l=91
w(w+6)=91
w^2+6w-91=0
now solve...

Answer 3

ok thank u!:)

Answer 4

yw

Answer 5

I cant find a common factor for 91 and 6?

Answer 6

got it:)

Answer 7

if you can't find factors use the general quadratic formula... less stress..

Answer 8

but I think its 13 and 7

Answer 9

oops 13 and - 7

Answer 10

yes thank you:) I got (w-7)(w+13)

Answer 11

don't look for common factors.. look for factors of the constant that add to the coefficient of x

Answer 12

would this be square meters as the units?

Answer 13

take only the positive value,the unit is meters

Answer 14

ok thank you:) so, look for factors of the constant that add to the coeffiecent of x :)..gotcha:)

Answer 15

ok thx:)

Answer 16

w ( w +6) -91 = 0
w^2 + 6w - 91 = 0
x = -3 +10 = 7 (omit negative value)