DrRose
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The sum of two binomials is 5x^2-6x . If one of the binomials is3x^2-2x , what is the other binomial?

Respuesta :

Its 2x^2-4x, to check it add it to 3x^2-2x or
2x^(2)-4x+3x^(2)-2x

Binomials are polynomials of two terms

The other binomial is [tex]2x^2-4x[/tex]

The sum of the binomials is given as:

[tex]Sum = 5x^2 - 6x[/tex]

Represent the two binomials with y and z.

Such that:

[tex]y = 3x^2 - 2x[/tex]

So, we have:

[tex]Sum = y + z[/tex]

Make z the subject

[tex]z = Sum - y[/tex]

Substitute [tex]Sum = 5x^2 - 6x[/tex] and [tex]y = 3x^2 - 2x[/tex]

[tex]z = 5x^2 - 6x - (3x^2 -2x)[/tex]

Open brackets

[tex]z = 5x^2 - 6x - 3x^2 +2x[/tex]

Collect like terms

[tex]z = 5x^2 - 3x^2- 6x +2x[/tex]

[tex]z = 2x^2-4x[/tex]

Hence, the other binomial is [tex]2x^2-4x[/tex]

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