Question

The rectangle beiownas an area of 15k^4+35k^3+20k^2 square meters

Answer 1

k²(15k² + 35k + 20 ) = 0

5 (3k² + 7k + 4 ) = o

( 3k²+ 3k + 4k + 4)

3k(k+1) + 4(k+1)

(3k + 4) ( k+1)

k = -3/4,,k=-1