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It can not be factored because its discriminant is less than zero
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∙ 11y ago
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If the diagonal of a square is twenty inches how do you find the length of the sides?
You use the Pythagorean theorem. Remember that Asq + Bsq = Csquared, where A and B are the sides of a right triangle and C is the diagonal. (Remember that a right triangle is just a square cut in half slantwise.) Based on the theorem, you know that the sum of A squared and B squared equals 20 squared (20 squared = 20 x 20 or 400.) Also, since it's a square you concerned with, you know that the sides are the same length. So whatever length "A" side is, "B" side is the same. So we might as well say two times A is the same as A plus B. So two times A squared equals 400. We only want to know what ONE side of the square measures, so we can reduce both sides of the equation by dividing each side by 2. In other words, if TWO times A squared equals 400, then ONE times A squared equals 200. But we don't want to know what the length of A squared is, we want to know what the length of A is. So take the square root. A equals the square root of 200. The square root of 200 is fourteen plus a fraction. So your square is fourteen plus a fraction on each side. Check your work: 14 squared plus 14 squared = 196 + 196 = 392, which is is very close to the C squared we started with of 400. The square root of 400 is 20, and you are back to the beginning.
4x squared plus 12x minus 40 divided by 4x plus 20?
x - 2
What is the roots 5x squared - 20 equals 0?
5x2 - 20 = 0x2 - 4 = 0x2 = 4x = +2 and -2
What makes the number sentence true 60-20 equals 20 plus?
60 - 20 = 20 + 20=============
What is 4x plus 20 equals 60?
x = 10
How do you factor x squared plus 9 x squared plus 20 equals 0?
If you mean: x2+9x+20 then it is (x+4)(x+5) = 0 when factored
What is x when x squared plus x - 20 equals 0?
4, -5
Factor x squared - x equals 20?
(x+4)(x-5) = 0
How do you factor negative two x squared minus 22x plus 40?
Factor out -2: -2(x squared +11x-20). This is fully factored.
What is 2 squared plus 400?
2 squared plus 2 squared equals 16 because 2 squared is 4 times 4 equals 16. Math: 4x4=16 so your answer is 16 :)!
Perform the following multiplication x plus 4 in parenthesis x plus 5 in parenthesis equals?
x squared plus 9x plus 20.
Factor this polynomial completely x squared plus x-20?
(x + 5) (x - 4)
What numbers equals 20 and what times what is 20?
20 = 400
What squared equals forty?
20
How do you completely factor 2x squared subtracted by 13x plus 20?
It is (2x-5)(x-4) when factored
How do you do 20 squared?
'20 squared' simply means 20 multiplied by itself (20 x 20). This equals 400.
What are the solutions to the simultaneous equations of x squared plus y squared equals 20 and 2y minus x equals 0?
The solutions are: x = 4, y = 2 and x = -4, y = -2
