Yuanyuan wrote two numbers. The difference between the two numbers is exactly equal to the product of the two numbers. One of them is 0, 36, and the other is?

Yuanyuan wrote two numbers. The difference between the two numbers is exactly equal to the product of the two numbers. One of them is 0, 36, and the other is?

Is one of them 0 or 36? If 0, then the other is 0

36 times of X is equal to the product of 7.5 and 12

36x = 7.5 × 12, & nbsp; & nbsp; 36x = 90, 36x △ 36 = 90 △ 36, & nbsp; & nbsp; & nbsp; & nbsp; X = 2.5, a: X is 2.5

The product of a number and 1.5 plus 8.4 is equal to 36 times 0.4

Let this number be X. according to the equation: X * 1.5 + 8.4 = 36 * 0.4, the solution is x = 4
A: the number is 4

Mathematical problem (binary equation) 25 / 2 of a minus 4 / 2 of B equals 1, and the square of a plus the square of B equals 36

Let a ^ 2 = x, B ^ 2 = y, the original equations are reduced to
x+y=36(1)
25/x-4/y=1(2)
From (1) we get y = 36-x and substitute (2) to get y = 36-x
25/x-4/(36-x)=1
900-25x-4x=36x-x^2
x^2-65x+900=0
x=20,x=45
y=16,y=-9
So a ^ 2 = 20, B ^ 2 = 16 or a ^ 2 = 45, B ^ 2 = - 9 (rounding off)
The solutions of the original equations are a = 2 √ 5, B = 4 or a = - 2 √ 5, B = 4 or a = 2 √ 5, B = - 4 or a = - 2 √ 5, B = - 4