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Since both positive*positive and negative*negative equal a positive number, the square root of 16 can either be +4 or -4.

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Q: What are all solutions of X2 equals 16?
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Related questions

What are the solutions for the quadratic equation x2 plus 6x equals 16?

x2 + 6x = 16=> x2 + 6x - 16 = 0=> x2 + 8x -2x - 16 = 0=> (x+8)(x-2) = 0=> x = -8 or x = 2So, the solutions of the quadratic equation x2 + 6x = 16 are -8 and 2.


How many solutions are there for the equation x2 plus 16 equals 8x?

2 this Domo


Which values are solutions to the inequality x2 equals 16?

x2 = 16take the root square for both sides the result will be :X = +4 or -4


How do you solve x2 equals 16?

If you meant x2 = 16 then take square root both sides which gives x = 4 but you need to see that -42 is also 16 so that is another solution. The two solutions are 4 and -4.


What are the solutions in completing the square x2 plus 6x equals 7?

x2 + 6x = 7 ⇒ x2 + 6x + 9 = 7 + 9 ⇒ (x + 3)2 = 16 ⇒ x + 3 = ±4 ⇒ x = -7 or 1


Which of the numbers are solutions to the equation x2 equals 3?

If: x2 = 3 Then: x = square root of 3


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2x2 - 3 = 13 So 2x2 = 16 x2 = 8 So that x = ±2√2


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Which of the numbers below are solutions to the equation x2 equals -36?

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What is x square plus 30 square equals to 16 square?

It is an equation with no real solutions - only complex ones. x2 + 302 = 162 x2 + 900 = 256 x2 = -644 So x = ±25.38*i, where i is the imaginary square root of -1.