3 years ago

Anyone know how to do this?

Mathematics

1 answer:

Pavel [41]3 years ago

4 0

Answer:

$5 = 16 - 11 \\ so \: \\ {x}^{2} - 8x + 16 - 11\\ \\ {x}^{2} - 8x + 16 = (x - 4)^{2} \\ \\ (x - 4)^{2} - 11$

Step-by-step explanation:

I hope that is useful for you :)

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Answer:

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Step-by-step explanation:

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Write a polynomial expression, in simplified form, that represents the AREA of the blanket and use the expression to evaluate th

pochemuha

Answer:

Polynomial expression that represents the area of blanket:

$A(x)=(6x^2+5x-21)cm^2$

If $x=2$ : $A(2)=13cm^2$

Step-by-step explanation:

The area of the rectangle can be calculated with the formula:

$A=lw$

Being l the lenght of the rectangle and w the width of the rectangle.

In this case, the lenght and the width are represented with:

$l=(3x+7)cm$

$w=(2x-3)cm$

Substitute them into $A=lw$ :

$A(x)=(3x+7)(2x-3)$

Then:

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$A(x)=(3x+7)(2x-3)\\A(x)=6x^2-9x+14x-21$

Add like terms:

$A(x)=(6x^2+5x-21)cm^2$ (Simplied form)

Evaluate $x=2$ :

$A(2)=(6(2)^2+5(2)-21)cm^2\\A(2)=(6(4)+10-21)cm^2\\A(2)=(24-11)cm^2\\A(2)=13cm^2$

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4 years ago

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Step-by-step explanation:

The point does not lie in the shaded region.

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