(a + b) power = 6, (a-b) = 8, find the value of a + B and ab

(a + b) power = 6, (a-b) = 8, find the value of a + B and ab

(a-b) square = 64 = a square + b square - 2Ab, so (a-b) square - (a + b) square = - 2ab-2ab = - 4AB = 64-6 = 58, ab = 58 divided by - 4 = - 14.5, a square + b square = (a + b) square - 2Ab = 6-2 times - 14.5 = 35

Given that a is 7 = 8 to B, what is the value of AB + 4?

a/7=8/b
Cross multiplication AB = 56
ab+4=56+4=60

1. Given that a + B = 5, A-B = 2, find the value of ab
2. Given that a + B = 5, A-B = 2, find the value of a & # 178; + B & # 178

（A+B）²=25
A²+2AB+B²=24 ①
（A-B）²=4
A²-2AB+B²=4 ②
① (2) 4AB = 20
So AB = 5
Substitute ②: A & # 178; + B & # 178; = 14

What kind of operation symbols are added to make the results of 1, 2, 3, 4 and 5 equal to 200

4*5*（3^2+1）＝200
(12*3+4)*5=200

1 2 3 4 5 = 200, add appropriate operation symbol in the middle

（12×3+4）×5=200

1 2 3 4 5 = 200 add operation symbol, make it hold!
1, 2, 3, 4, 5 = 200, fill in the operation symbol to make it true! Don't make two numbers together! For example, make 1 and 2 into 12, only add, subtract, multiply, divide and parentheses can be used!

It's impossible

Add the operation symbol so that 1 2 3 4 5 6 = 1 holds

1+2+3-4+5-6=1

2 3 4 5 6 = 42, add the operation symbol and bracket to make the equation hold

(2*3-4+5)6=42

"*" is a kind of operation symbol, known as 2 * 3 = 2 + 3 + 4, 7 * 2 = 7 + 8. According to this rule, n * 8 = 68, n =?

N*8=N+N+1+N+2+N+3+N+4+N+5+N+6+N+7=8N+28
8N+28=68
N=5

How does the plus minus sign between 1 2 3 4 5 6 equal 5

1-2+3+4+5-6=5