Question

The area of a rectangle is given by A = x2 – 2x + 30. Find the value of x if the total area of the rectangle is equal to 45 square units.

Answer 1

i meant x^2-2x+30

Answer 2

x^2 – 2x + 30 = 45
x^2 – 2x - 15 = 0
solve this for x and take the positive root

Answer 3

(x - 5)(x + 3) = 0

x = 5

Answer 4

Thank You So Much :)

Answer 5

yw