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3 years ago

13

I’ve done this over and over how do u do it?

1 answer:

myrzilka [38]3 years ago

3 0

Long division would take care of this nicely for you. In the box you will put this: $5 x^{4}+0 x^{3} +3 x^{2} +0x+8$ . Don't forget to leave a place for the x's that aren't there. Then do the division. The answer is A. I believe that it would be near impossible to show you how to do long division of polynomials in this particular forum.

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3 years ago

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2 years ago

Y=x+1<br> y=x^2-1<br><br> please help i don't understand

ololo11 [35]

ANSWER

The solution is

$(x=1,y=2),(x=2,y=3)$

<u>EXPLANATION</u>

We have

$y=x+1---(1)$

and

$y=x^2-1---(2)$

Let us substitute equation (1) in to equation (2). This gives us,

$x+1=x^2-1(2)$

We rewrite this as a quadratic equation as the highest degree is 2.

$x^2-x-1-1=0$

This implies that

$x^2-x-2=0$

we factor to obtain,

$x^2+x-2x-2=0$

$x(x-1)-2(x-1)=0$

$(x-1)(x-2)=0$

This means,

$(x-1)=0\:\: or\:\:(x-2)=0$

$x=1\:\: or\:\:x=2$

We substitute this values into any of the above equations, preferably equation (1)

When, $x=1$ , $y=1+1=2$

When, $x=2$ , $y=2+1=3$

The solution is

$(1,2),(2,3)$

8 0

3 years ago