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Mathematics 15 Online
OpenStudy (anonymous):

Help?! plz!?

OpenStudy (anonymous):

The area of a rectangle is x2 - 2x - 15 and the length of the rectangle is x + 3. Find the width of the rectangle. A. x – 5 B. x2 + 15 C. x + 5 D. (x – 2)(x + 3)

OpenStudy (anonymous):

@Hunus @Chu~Luv~You2019 @Xanthe

OpenStudy (anonymous):

@yrelhan4

OpenStudy (anonymous):

B or C?

OpenStudy (anonymous):

I believe its B..

OpenStudy (anonymous):

yeah cuz it looks too complicated 0.0 lol

ganeshie8 (ganeshie8):

it cannot B or D, cuz both B and D are quadratics

OpenStudy (anonymous):

lol

OpenStudy (anonymous):

so C or A?

OpenStudy (yrelhan4):

A=length*width.. so A/length=width. solve and see..

OpenStudy (anonymous):

its probably A/

OpenStudy (anonymous):

C?

OpenStudy (anonymous):

yeah A?

ganeshie8 (ganeshie8):

factor the given expression

OpenStudy (anonymous):

i cant >.<

OpenStudy (yrelhan4):

x2 - 2x - 15= x^2 - 5x+3x -15=x(x-5) + 3(x-5) = (x+3)(x-5) .. x2 - 2x - 15=(x+3)(x-5)

ganeshie8 (ganeshie8):

then you can go with the long division

OpenStudy (yrelhan4):

now divide this by x+3.. that gives you x-5..

OpenStudy (anonymous):

So A is correct

OpenStudy (anonymous):

give me a sec :)

OpenStudy (anonymous):

yeah lol A

OpenStudy (anonymous):

Lol

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