If a equals 2, then a & sup2; equals 2A Is that right

If a equals 2, then a & sup2; equals 2A Is that right

It's right to square two by two

Given that real numbers a and B satisfy a & # 178; - 7a + 2 = 0, B & # 178; - 7a + 2 = 0, find the value of B of a + a of B

Given that real numbers a and B satisfy a & # 178; - 7a + 2 = 0, B & # 178; - 7b + 2 = 0, find the value of B of a + a of B
From the meaning of the title, we can see that a and B are two parts of the equation x & # 178; - 7x + 2 = 0,
a+b =7,
ab=2
So B / A + A / b = (A & # 178; + B & # 178;) / AB = [(a + b) &# 178; - 2Ab] / AB = (49 - 4) / 2 = 45 / 2

Given the power of 2a to the third power + the power of m to the fifth power of B - the power of 9A to the fourth power of B to the nth power + the power of 1 = 7a to the fourth power of B to the 5th power, find the value of (- 2m + n) to the nth power

It is known that the third power of 2A + the fifth power of m power B - the fourth power of 9a, the nth power of B + the fifth power of 1 = 7a
2a^3+mb^5-9a^4b^n+1=7a^4b^5
3+m=4 5=n+1
m=1 n=4
The nth power of (- 2m + n)
=(-2*1+4)^4
=2^4
=16