If the trinomial square difference formula (a + B-C) becomes a square difference formula, which formula should it multiply with

Just take out the one after the minus sign and replace it with +
[(a + b) - C] [(a + b) + C] = (a + b) - C
So multiply (a + B + C)

RELATED INFORMATIONS

1. If a = B, then the following formula does not hold: A & # 178; + B & # 178; = A & # 178; B & # 178; a & # 178; = B & # 178; AC = BC, a-c = c-b
2. If A-B = B-C = 3 / 5 and a & # 178; + A & # 178; + A & # 178; = 1, find the value of AC + BC + AC
3. If AC & # 178; < BC & # 178;, then the relation between a and B is a___ b. (if C is 0, then the inequality does not hold)
4. AB-AC + bc-b & #178; factorization
5. Carefully observe the following formula: 2 & # 178; - 1 & # 178; = 2 + 1 2²-1²=2+1 4²-3²=4+3 12²-11²=12+11 ① (omitted, meeting) ② Using the law to calculate: 20 & # 178; - 19 & # 178; + 18 & # 178; - 17 & # 178; + +12²-11²=（）
6. Calculate a × (- a ×178; b) of B
7. What is 1 & # 178; + 3 & # 178; + 5 & # 178; +. + 15 & # 178; = equal to
8. What is 5 π & # 178; × 2 / π? π is either a curvilinear integer or a decimal, or an infinite acyclic number,
9. 1.x²-7x+12 2.x²+x-12 3.x²-4x-12 4.x²+10x-24 5.-x²-4x+21 6.(x-1)(x+4)-6 Multiplication by cross
10. If √ 7-x & # 178; = X-7, √ X-13 & # 178; = 13-x. simplify | 6-x | + | x-14|
11. The following formula can be calculated by the square difference formula: A. (a + b) (- a-b) B. (a-b) (B-A) C. (a-b) ^ D. (- A + b) (- a-b)
12. If we want to make 16x & # 178; + 1 a complete square, we should add the following formula
13. (a-b) (A & # 178; + B & # 178;) (a ^ 4 + B ^ 4) (a + b) how to use the square difference formula
14. The results of (a + b) &# 178; - (a-b) &# 178; are calculated
15. Please use the square difference formula: (a + b) (a-b) = A & # 178; - B & # 178;, calculate: 100 & # 178; - 99 & # 178; + 98 & # 178; - 97 & # 178; +... + 2 & # 178; - 1 & # 178;
16. If a & # 178; - B & # 178; - 4 - () = A & # 178; + B & # 178; + AB, then the formula in () is? 1.8-8x/1.2-1.3-3x/2=5x-0.4/0.3
17. If we know (a + b) &# 178; = m, (a-b) &# 178; = n, then ab=_____
18. Given (a + b) &# 178; = m, (a-b) &# 178; = n, find the value of: (1) (A & # 178; + B & # 178;) / AB; (2) ab It's represented by m, n
19. If a + B = m, ab = n, find the value of a & # 178; + B & # 178
20. Sin & # 178; a + cos & # 178; a = 1. What other formulas like this?