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Cloyd Tremblay
Wiki User
∙ 12y agox2 = 92 - 2x2
x2 + 2x2 = 92
3x2 = 81
x2 = 81/3
x2 = 27
x = 5.196 (to 3 decimal places only)
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Is -2x squared plus 2x plus 1 equals 9 a quadratic equation?
Yes it is. The thing that makes it a quadratic equation is that "x squared" in there.
How do you factor x squared -2x-3 equals 0?
x squared -2x-3 equals 0 is the same as (x + 1)(x - 3) = 0
What is the answer to 2x squared -2x -40 equals 0 is it x equals 5 and x equals -4?
Yes it is and well done.
How do you solve 2X plus 5 squared equals 7?
2x + 52 = 7 2x + 25 = 7 2x = 7 - 25 2x = -18 x = -18/2 x = -9
10x squared - 17 x equals 63?
(2x - 7)(5x + 9) ie x = 3.5 or -1.8
Is -2x squared plus 2x plus 1 equals 9 a quadratic equation?
Yes it is. The thing that makes it a quadratic equation is that "x squared" in there.
How do you factor x squared -2x-3 equals 0?
x squared -2x-3 equals 0 is the same as (x + 1)(x - 3) = 0
How do you solve 2X plus 5 squared equals 7?
2x + 52 = 7 2x + 25 = 7 2x = 7 - 25 2x = -18 x = -18/2 x = -9
What is the answer to 2x squared -2x -40 equals 0 is it x equals 5 and x equals -4?
Yes it is and well done.
Does x times x equal 2x?
No, x + x equals 2x. x times x equals x2. (x times x equals x squared.)
10x squared - 17 x equals 63?
(2x - 7)(5x + 9) ie x = 3.5 or -1.8
What is 2X squared if x equals 2?
48
2x equals -x plus 9?
2x = -x +9
What is 2x-9 equals 9?
It is an algebraic expression involving x. Of do you mean 'what is x if 2x - 9 equals 9?' 2x - 9 = 9 ⇒ 2x - 9 + 9 = 9 + 9 ⇒ 2x = 18 ⇒ 2x ÷ 2 = 18 ÷ 2 ⇒ x = 9
If x equals A squared what is 2x-4?
6
If 5xequals 9plus 2x then x equals?
If 5 x equals 9 plus 2x then x equals?
What does cos squared x - Sin squared x equal?
2 x cosine squared x -1 which also equals cos (2x)
