Exam Maths Puzzle Algebra

Q1. Solve 1/8 = 4^5x+4

Q2. Solve 1/125 = 25^8x-5

Choose the exponential function that is satisfied by each of these coordinate pairs: (0,1), (-1,2) and (2, 1/4).

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Exam Other Question

Can someone please show me how to do the following problem:

Solve for X, Y, and Z in the following:

22x + 5y + 7z = 12, 10x + 3y + 2z = 5, 9x + 2y + 12z = 14 Find the value of the discriminant and determine the number of solutions for each equations
l. 4x^2 + 3x + 1 = 0
2. X^2 + 2X - 6 = 0
3. X^2 - 5X + 1 = 0
4. X^2 - 4X + 4 = 0