Find two numbers whose difference is 15 and whose product is 1584

Question

Find two numbers whose difference is 15 and whose product is 1584

in progress 0
Audrey 24 mins 2021-09-10T13:45:59+00:00 1 Answer 0

Answers ( )

  1. Ava
    0
    2021-09-10T13:47:12+00:00

    X – y = 15
    Xy= 1584
    We’ll use substitution to solve. Let’s manipulate the first equation.
    X = y + 15
    Now we can plug in y + 15 for x in the second
    Y(Y + 15) = 1584
    Y^2 + 15Y = 1584
    You can now solve this like any quadratic. I’ll complete the square.
    (Y + 7.5)^2 = 1640.25
    Y + 7.5 = 40.5
    Y = 33
    X – 33 = 15
    X = 48

Leave an answer

Browse
Browse

27:3+15-4x7+3-1=? ( )