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Q: X squared plus 9 squared equals 12 squared?

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12 plus 9 equals 21.

2 squared plus 2 x 3 = 10, 7 squared plus 7 x 2 = 63, 6 squared plus 6 x 5 = 66,8 squared plus 8 x 4 = 96 so 9 squared plus 9 x 7 = 81 + 63 = 144.

7(3y-2)-(-4y+9)

Using the discriminant for a quadratic equation the value of k works out as plus or minus 12.

No, it is not. For a right triangle, from the Pythagoraen theorem, 7 squared plus 9 squared does not equal 12 squared

6 squared plus 9 squared is equal to 117.

9*12 = 108

Yes it is. The thing that makes it a quadratic equation is that "x squared" in there.

x^2 +9 =x^2 -9 9=-9 No solution

12 + 16 + 18 + 20 + 9 = 75

The given expression can be simplified to: 8x squared +9

9 plus 2 squared is equal to 13.

9 divided by 9 equals 1, and 3 times 12 equals 36. 1 plus 36 equals 37.

c = 4, c squared = 16, 3c squared = 48, 48 + 9 = 57.

9 squared equals 81.

-3

The center of the circle given by the equation (x - 3)2 plus (y + 2)2 = 9 is (3,-2).

27

x=-24

If you mean: x2+9x+20 then it is (x+4)(x+5) = 0 when factored

x=9 squared

{-1,7}

3 + 9 = 12

The missing number is 49. This is why: 1 plus 2 equals 3, then 3 squared is 9. 2 plus 3 equals 5, then 5 squared is 25. Therefore, the missing number must be 49 to make the number sentence (3 plus 4 equals 7, then 7 squared is 49) true.

-12 = x+9 x+9 -9 = -12 -9 x = -21

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