Given a = 3a-4b + C, B = 5A + 4B + 2c, find [1] A-B; [2] a + B; [3] 2a-3b

Given a = 3a-4b + C, B = 5A + 4B + 2c, find [1] A-B; [2] a + B; [3] 2a-3b

What is the remainder of the 10th power of 53 divided by 8

If the number of bits of 53 is 3 and the number of bits of 53 is 9 × 9 × 9 × 9 × 9 = 81 × 81 × 9 = 9, then the remainder of the tenth power of 53 divided by 8 is 1

In △ ABC, ab = 5, BC = 4, AC = 3, let p be a point in △ ABC (including boundary), and the distances from P to three sides of AC, BC and ab are x, y and Z, respectively. The value range of X + y + Z is obtained

Establish the coordinate system. C is the coordinate origin. The moving point P coordinate is (A.B), then the distance to AC = a. the distance to BC = B. solve the AB line equation. Then use the distance formula from point to line. So x + y + Z = the distance from a + B + P to ab! This is the idea. Only AB2 parameters should be left. Then use the basic inequality to solve it
Basic inequality a + b > = 2 radical ab