A. In his Mathematics class, Sir Allan posted 4 equations on the board.
As part of the game, the learners will identify equations that are
quadratic. What equation(s) should be selected by the
learners?
i. 8k-3=12
ii. x2-5x+3=0
iii. 9r2-25=0
iv. (2x+5) (x-1)=-6
Show an solution
Answer (1)
Solution:I. 8k - 3 = 12 (linear equation)II. x² - 5x + 3 = 0 (quadratic equation)III. 9r² - 25 = 0 (quadratic equation)IV. (2x + 5)(x - 1) = -6 2x² - 2x + 5x - 5 + 6 = 0 2x² + 3x + 1 = 0 (quadratic equation)Equations under II, III, and IV are examples quadratic equation because of the degree of exponents that is higher than 1. While equation 1 is considered as a linear equation because of having a degree of exponent of 1.#CarryOnLearning
