Question

Упростите выражение A−BA−B, если A=2x−y, B=−3y−5xy

Answer 1

$A-BA-B=2xy-y-(2xy-y)(-3y-5xy)-(-3y-5xy)=\\2xy-y+6xy^2+10x^2y^2-3y^2-5xy^2+3y+5xy=\\10x^2y^2 + xy^2 + 7xy - 3y^2 + 2y$

Answer 2

To simplify the expression A - B, where A = 2x - y and B = -3y - 5xy, we need to substitute the values of A and B into the expression and then perform the subtraction. Here's the step-by-step simplification:

A - B = (2x - y) - (-3y - 5xy)

Now, let's remove the parentheses:

A - B = 2x - y + 3y + 5xy

Next, combine like terms:

A - B = (2x + 5xy) - y + 3y

To further simplify, combine the y terms:

A - B = 2x + 5xy + 2y

So the simplified expression for A - B is 2x + 5xy + 2y.