Answer:
Explanation:
Multiply the numbers:
-5x*15x + 12x - 4x.
Which should get you: -75xx + 12x - 4x
Then combine exponents : -75xx + 12x - 4 = -75x^2 + 12x - 4x
Combine like terms: -75x^2 + 8x
Then find common factor with is -1
Lastly, rewrite in factored form : -1(75x^2 + 8x) = -1(75x - 8)x