Question

(3x+7)(2x-5)

Answer 1

there really should be some sort of indication as to what you need help with ...

Answer 2

just open the bracket

Answer 3

6x^2 - 15x +14x - 35
= 6x^2 + x - 35

Answer 4

if the object is to expand it out, then we just multiply them together; which is the same concept as if you were to multiply 35 and 23 together ..

35
23
----
105
70
----
805
...................................

3x +7
2x -5
--------------
-15x -35
6x^2 +14x
---------------
6x^2 - x - 35