Somebody help me, please!!

Simply 8x squared + 5(7x squared- x) - 2x =

Follow these steps using the algebra tiles to solve the equation −5x + (−2) = −2x + 4. 1. add 5 positive x-tiles to both sides and create zero pairs. 2. add 4 negative unit tiles to both sides and create zero pairs. 3. divide the unit tiles evenly among the x-tiles. x =

Ling listed all of the factors of a mystery number: 1,2,4,8,16,32 what is the mystery number?