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The browser that is used for submitting questions does not permit many mathematical symbols. It is therefore not possible to be sure what the question was. Here, it is not possible to tell whether the last term is positive or negative. For a quadratic equation of the form ax^2 + bx + c = 0, where a, b and c are real numbers and a is non-zero, the discriminant is b^2 – 4ac.

Q: What is the value of the discriminant for the quadratic equation 2x2-x 80?

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(2x + 1)(x + 2)

Factored?2X2 - 2X2X(X - 1)================If this were set to 0, X = 0 and X = 1

2m x 2m x 3m is equal to 12 m3 (cubic metres)12 m3 is equal to 423.776 ft3 (cubic feet)

x=5.54x+1= 2x+12-1 -14x=2x+11-2x -2x2x=11/2 /2x=5.5

1/(x-5) = 4/(2x)4(x-5) = 2x4x - 20 = 2x2x = 20x = 10_______________________________Check:1/(10-5) ?=? 4/(2x10)1/5 ?=? 4/201/5 = 1/5 yay!

You don't use a 'property" to combine like terms, you use an "operation". To combine like terms, use the following operations:Addition: 4x+3x=7xSubtraction: 4x-3x=1x=xMultiplication/Division:4x = 2x + y-2x + 4x = 2x + y -2x2x = y1/2 * 2x = y * 1/2x = y/2check: x,y=(10,20)4*10 = 2*10+2040 = 20+2040 = 40 = true==============You are absolutely right! I stand corrected: But if the asker wants to know, it is the distributive property of like terms which makes combing them possible as illustrated in the examples, above. Thanks.-----You can use the distributive property to combine like terms.For example, take 3x+5x. By using the distributive property, this is the same as x(3+5). Since 3+5=8, the sum of 3x and 5x is 8x.

Costs vary as to the type of trees and the area to be worked. As regards fir trees, the figure of $65 per acre has been circulating. Energy costs are pushing that figure higher. The "missig link" in this activity is the time it will take for the trees to grow up and "reforest" the forest. Seedlings are started and planted by the millions every year, but the old growth forests they replace when grown up support a slightly different group of critters. One classic example might be the marbled murrelet, which only nests in old growth forest, like Pacific Coast redwoods. And how long does it take for a redwood to mature? Maybe five hundred years? Maybe a thousand? Wikipedia has an article, but at this writing it is a stub. It does, however, have links to related material. Why not surf on over and check it out. Oh, need a link? You got it.