Multiplication formula of Grade 8 math 15.2 The teacher wrote three formulas on the blackboard: 5 ^ 2-3 ^ 2 = 8 * 2, 9 ^ 2-7 ^ 2 = 8 * 4, 15 ^ 2-3 ^ 2 = 8 * 27. Wang Hua then wrote two formulas with the same rule: 11 ^ 2-5 ^ 2 = 8 * 12, 15 ^ 2-7 ^ 2 = 8 * 22 (1) please write another two (different from the above formula) with the above rules. (2) write the rules reflecting the above formula in words

Multiplication formula of Grade 8 math 15.2 The teacher wrote three formulas on the blackboard: 5 ^ 2-3 ^ 2 = 8 * 2, 9 ^ 2-7 ^ 2 = 8 * 4, 15 ^ 2-3 ^ 2 = 8 * 27. Wang Hua then wrote two formulas with the same rule: 11 ^ 2-5 ^ 2 = 8 * 12, 15 ^ 2-7 ^ 2 = 8 * 22 (1) please write another two (different from the above formula) with the above rules. (2) write the rules reflecting the above formula in words

It's not right upstairs
（1） 15^2-13^2 = 8* 6 & 13^2 - 11^2 = 8*7
（2） （2a+1)^2-(2b+1)^2 = 8*[a+(a-1)+(a-2)+…… +(b+1)]
A and B are integers, B

How to write 6 + 2 + 3 + 3 in multiplication

6+2+3+3
=6+2+6
=2x（3+1+3）
=2x7

6 + 6 + 6 + 6 can be written as multiplication formula (), read as (); it can also be written as multiplication formula (), read as ()
In this question, does the formula in brackets need to be written in numbers? Why?

Answer: 6 + 6 + 6 + 6 can be written as multiplication formula (6 × 4), read as (6 × 4); it can also be written as multiplication formula (4 × 6), read as (4 × 6)