221k views
4 votes
X-1=2
Work out the value of 2x squared

User Rupali
by
8.4k points

2 Answers

4 votes

Answer:

1.22474487139

Explanation:

x = 3

so if 2x^2 - 1 = 2

add 1 to both equations

2x^2 = 3

next, divide 2 from both sides

x^2 = 3/2

x^2 = 1.5

now find the square root of 1.5

the answer is:

1.22474487139

User Shounak Bose
by
8.3k points
4 votes

Explanation:

x-1=2 therefore x is 3 so 2x squared is 36

User Okarpov
by
8.8k points

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