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4x2-y2 = (2x-y)(2x+y)

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โˆ™ 2011-11-16 15:40:55
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Q: How do you factor 4x2 - y2?
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(2x - y2)(4x2 + 2xy2 + y4)


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(3 - y + 2x)(3 + y - 2x)


What is the length of one side of this square 4x2 - 4xy plus y2?

4x2 - 4xy + y2 = (2x - y)2 so the length of the side of the square must be 2x-y.


What is the square root of -4x2?

In real numbers there is no square root of -4x2 However, when using complex numbers where √-1 = i, then: √-4x2 = 2xi If you were asking, for example, with regard to the difference of two squares, eg y2 - 4x2, then you are actually finding the square root of 4x2 which is 2x, giving: y2 - 4x2 = (y + 2x)(y - 2x)


Which choice shows y2 in isolated form 4x2 plus 25y2 equals 100?

The one which says: y2 = 4 - 4/25 x2


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It is: y2


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The GCF is 4x2.


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4x2 - 9y Not factorable from what I see.


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4x2-7x-15 = (4x+5)(x-3) when factored


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4x2-36x+81 (2x-9)(2x-9)


Factor 4x2 plus 20x plus 25?

4x2+20x+25 (2x+5)^2


Which of the binomials is a factor of trinomial 4x2 - 4x - 120?

4x2-4x-120 = (2x+10)(2x-12) when factored


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8x2(3 - 4x2)


What is the greatest common factor of 20x2 and 32x3?

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