Multiply the parentheses, then you’ll get:
14Xx9X-14Xx3-5x19X-5x(-3)
Then you’ll multiply 14 & 19
Then multiply 14 & 3
Then 5 & 19
Then 5 & 3
And it should be set up like this
266X2-42X-95x+15
(^the X2 should be squared)
Then after that you collect like terms
You add 42 and 95 together and bring everything else down and your ANSWER should be:
266X2-137X+15
(Remember the X after 266 has to be squared )