Final answer:
The product of (91-4)(-91-4) is -8325.
Step-by-step explanation:
To find the product of (91-4)(-91-4), we can use the distributive property of multiplication over addition. First, multiply the first terms together: 91 * -91 = -8281. Then, multiply the outer terms: 91 * -4 = -364. Next, multiply the inner terms: -4 * -91 = 364. Finally, multiply the last terms together: -4 * -4 = 16. Add all the products together: -8281 - 364 + 364 + 16 = -8325. Therefore, the product of (91-4)(-91-4) is -8325.