Question

multiply 3 X + 5 Y and 5 x minus 7y

Answer 1

Answer:

Step-by-step explanation:

15x^2-21xy+25xy-35y^2

15x^2+4xy-35y^2

Answer 2

(3x+5y)(5x-7y)
=15x^2 +25xy-21xy+ 49y^2
=15x^2+4xy+49y^2