What is the value of x-y, if xy=144, x+y=30, and

Shelia Lawrence

Shelia Lawrence

Answered question

2021-12-13

What is the value of xy, if xy=144, x+y=30, and x>y?

Answer & Explanation

Bob Huerta

Bob Huerta

Beginner2021-12-14Added 41 answers

(1)xy=144
(2)x+y=30y=30x
Substitute (2) for y back iin (1):
x(30x)=144x230x+144=0
Factoring
(x6)(x24)=0
Either x=6 or x=24
Since we know that x>y
x=24,y=6
xy=246=18
mauricio0815sh

mauricio0815sh

Beginner2021-12-15Added 34 answers

xy=18

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