Study guides

Q: How do you factor x squared plus 9 x squared plus 20 equals 0?

Write your answer...

Submit

Related questions

It can not be factored because its discriminant is less than zero

Factor out -2: -2(x squared +11x-20). This is fully factored.

4, -5

(x+4)(x-5) = 0

x squared plus 9x plus 20.

(x + 5) (x - 4)

The solutions are: x = 4, y = 2 and x = -4, y = -2

It is (2x-5)(x-4) when factored

'20 squared' simply means 20 multiplied by itself (20 x 20). This equals 400.

1 plus 19 equals 20 2 plus 18 equals 20 3 plus 17 equals 20 4 plus 16 equals 20 5 plus 15 equals 20 6 plus 14 equals 20 7 plus 13 equals 20 8 plus 12 equals 20 9 plus 11 equals 20 10 plus 10 equals 20 1 times 20 equals 20 2 times 10 equals 20 4 times 5 equals 20

Simple. When a number is 'squared' it simply means it is multiplied by itself. So, '20 squared' means 20 x 20, which equals 400.

(8x + 5)(3x + 4)

4.472

20

x2+x-380 = (x+20)(x-19) when factored

36. 4 squared is 16...16 + 20 - = 36.

x2 - 9x + 20 = (x - 4)( x - 5)

x2 + 9x + 20 = 0 ∴(x + 4)(x + 5) = 0 ∴x ∈ {-5, -4}

3² + 20 ÷ 2² = 9 + (20 ÷ 4) = 14.

To solve this one, subtract 50 from 180 and you'll have your answer.

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.

502 + (20/(202) x 15) = 2500.75

20 plus 20 equals 4020 plus 20 = 40

Yes.

38 +what=57