Question

Find the dimensions of a rectangle whose perimeter is 16 meters and whose area is 15 square meters.

Answer 1

Ok solve the system 2a + 2b =16;
a*b =15

Answer 2

you have 2 equations and two unknowns, a and b. Have at it!!

Answer 3

So far on paper I have

x times x+16 = 15
x (x+16) = 15
x^2 + 16x = 15
x^2 + 16x - 15 = 0
(x+ ) (x - ) = 0

shall I put (x + 5) (x - 3) = 0