Question

Need help (pic included)

Answer 1

The value of the coefficient of xy is 0.

What is an algebraic expression?

It is an expression made of numbers and letters where the numbers are called coefficient.

Analysis:

(ax+by)(cx-dy)

ac$x^{2}$ -adxy +bcxy -bd$y^{2}$

But, ac = 18, ad=bc, bd = 50

18$x^{2}$ -xy(bc -ad) - 50$y^{2}$

since bc = ad, the coefficient of xy = 0

Learn more about algebraic expressions: brainly.com/question/2164351

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