us-twice-the-number-is-15-translate-into-an-equation-and-find-all-real-solutions

Question

Use the grouping and distribution strategy to translate and solve: "The square of a number minus twice the number is 15." Translate into an equation and find all real solutions.

Accepted Answer

$$x^{2}$$ − 2x = 15; x = 5 or x = −3

Answer

$$x^{2}$$ − 2x = 15; x = −5 or x = 3

Answer

$$2x^{2}$$ − x = 15; x = 3.5

Answer

$$x^{2} + 2x = 15$$; x = 3 or x = −5