Answer
$6x^2+13xy-5y^2$
Work Step by Step
$$(3x-y)(2x+5y)$$
To multiply two binomials (expressions with two terms) multiply each term in the first binomial by each term in the second binomial:
$$=(3x\times 2x)+(3x\times 5y)+(-y\times 2x)+(-y\times 5y)$$ $$=6x^2+15xy-2xy-5y^2$$
Combine like terms:
$$=6x^2+13xy-5y^2$$
