SOLUTION: x to the second power - 4 = 3

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Question 49424: x to the second power - 4 = 3
Answer by rchill(405) About Me  (Show Source):
You can put this solution on YOUR website!
First, add 4 to both sides of the equation to produce +x%5E2+-4+%2B4+=3%2B4+, which simplifies to +x%5E2+=+7+. Take the square root of both sides produces +sqrt%28x%5E2%29+=+sqrt%287%29+, which simplifies to +x+=+sqrt%287%29+. If you need to compute the actual square root of 7, get a calculator, or find it in a table of square roots (usually in the back of algebra books). By the way, the square root of 7 is 2.64575.