Q: What are all solutions of X2 equals 16?

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2 this Domo

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

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.

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

x2-10 = 0 x2 = 10 x = the square root of 10

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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.

2 this Domo

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

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.

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

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

x2-10 = 0 x2 = 10 x = the square root of 10

2x2 - 3 = 13 So 2x2 = 16 x2 = 8 So that x = Â±2âˆš2

It has two equal solutions of 2

x2 = 81 Square root both sides:- x = +/- 9

38

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