$x^2=20; \ => \ \left[\begin{array}{ccc}x=\sqrt{20} \\x=-\sqrt{20} \end{array} \ => \ \left[\begin{array}{ccc}x=2\sqrt{5} \\x=-2 \sqrt{5} \end{array}$

3 0

2 years ago

According to the square root property, the solution set of x 2 = 25 is {±5}. True False

babymother [125]

I believe the correct answer is true. According to the square root property, the solution set of x^2 = 25 is {±5}. The square root property is one method that is used to find the solutions to a quadratic (second degree) equation. This method involves taking the square roots of both sides of the equation. Hope this answers the question.

8 0

2 years ago

Read 2 more answers

A pencil and an eraser cost € 1.40 (total cost).

Over [174]

Answer:

Eraser cost €0,2

Step-by-step explanation:

Cost of ereaser - x

Cost of pencil - x + 1

x + x + 1 = 1,4

2x + 1 = 1,4

2x = 0,4

x = 0,2

7 0

2 years ago