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Q: How do you solve X squared minus four for x equals 3?

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By factoring I get x-3 divided by x+3

83

Negative 5.

-10 - 4 = -14

One whole is nine ninths. Nine ninths minus four ninths equals five ninths.

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(-x)2 = 3=> -x = ±√3=> x = -√3 and x = √3

Negative sixty-four minus four squared is equal to -80.

-22 - -22

Square root both sides and then x = 4

Question 3C: Four minus seven equals negative two.

There are no rational factors.

I'll assume that's - 5c. Then you're looking for numbers that multiply to -24 and add to -5. That's -8 and 3. (c - 8)(c + 3) = 0 c = 8, -3

3x2 - 11x - 4 = 0(3x + 1)(x - 4)x = -1/3 and 4

81 x 2 - 16 = 146

By factoring I get x-3 divided by x+3

x^2 - y^2 - 4 is in its simplest form.

Four squared plus 188,898 minus 17,798 plus 188,898 = 360,014

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