Answer:4x3 – 4x2 + 12x2 – 7x – 12x – 21. 4x3 + 8x2 – 19x – 21. That was painful! Now I'll do it vertically: 4x^2 – 4x – 7 is positioned above x + 3; first row. That was a lot easier! But, by either method, the answer is the same ...
Explanation:
4x3 – 4x2 + 12x2 – 7x – 12x – 21. 4x3 + 8x2 – 19x – 21. That was painful! Now I'll do it vertically: 4x^2 – 4x – 7 is positioned above x + 3; first row. That was a lot easier! But, by either method, the answer is the same ...