Solution: a (m+1+2n+1) * b (n+2+2m) = a 5 * b 3.

∴m+2n+2=5 ( 1)

2m+n+2=3 (2)

(2)-( 1) De: m-n=-2

2. If the m power of 5 =2 and the n power of 2 =4, find 2M-4+3 of 5.

This question is not clear, is it wrong?

3. The rational numbers x and y satisfy the absolute value of X+Y-5+square (x-y+ 1) =0. Find the square of (the square of xy) × (the square of x× the square of y).

∵|x+y-5| +(x-y+ 1)？ =0

∴x+y=5

x-y=- 1

∴x=2,y=3

(the square of xy) the square of x (the square of x and the square of x y)

=(xy？ )? *(x？ *y？ )?

=x？ y^4*x^4*y^4

=x^6*y^8

When x=2 and y=3.

The original formula = 26 * 38 = 64 * 6561= 419904.

4\ From the meaning of the question: A=3

"3 A-3+2 3-A -B+300" equals?

5、3^(555)=(3^5)^ 1 1 1=243^ 1 1 1

4^(444)=(4^4)^ 1 1 1=256^ 1 1 1

5^(333)=(5^3)^ 1 1= 125^ 1 1 1

∵ 125 & lt； 243 & lt256

∴5^(333)<； 3^(555)<； 4^(444)

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