Question

3. The area of a rectangular swimming pool is 10x^2 – 19x – 15. The length of the pool is 5x + 3. What is the width of the pool?

Answer 1

2x – 18
2x – 5
5x – 5
5x – 22

Answer 2

Area = L*W
so W= Area/L (divide both sides by L)
Here area is 10x^2 – 19x – 15
divide it by L=5x + 3

Do you know how to divide 5x+3 into 10x^2 – 19x – 15 to get W

Answer 3

it factorises

(5x +3)(2x -5) if the length is 5x + 3 the width is 2x - 5

Answer 4

thanks