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Mathematics 8 Online
OpenStudy (kingj):

Using synthetic division, what is the quotient: (y3 + 6y2 + 10y + 3) ÷ (y + 3) ?

myininaya (myininaya):

So again we do the same set up for the last question you asked... y+3=0 when y=-3 -3| 1 6 10 3 <----coefficients of the terms on top | =================== ^ | bottom's zero

myininaya (myininaya):

3| 1 6 10 3 | =================== First Step: Bring down that 1 3| 1 6 10 3 | =================== 1 Second Step: Multiply 3 and 1 That result goes under the 6 like so: 3| 1 6 10 3 | 3 =================== 1 Third Step: Add the 6 and 3 3| 1 6 10 3 | 3 =================== 1 9 Fourth Step: Multiply that 9 and that 3 on the outside (the bottom's zero) 3| 1 6 10 3 | 3 27 =================== 1 9

myininaya (myininaya):

What is the next step? What is your guess on the next step?

OpenStudy (kingj):

ummm idk

OpenStudy (kingj):

im having trouble what would be the answer to make sure im right

myininaya (myininaya):

Sorry I had a quick think to do I don't know the answer until I have worked it out so lets do it together

myininaya (myininaya):

@KingJ So just like we added the 6 and 3 We need to also add the 10 and 27

myininaya (myininaya):

3| 1 6 10 3 | 3 27 =================== 1 9 37 So you can think of it like this the numbers in vertical formation add those The numbers at sorta a diagonal you multiply those like So we do 3 times 37 to figure out what goes underneath the last coefficient (the 3)

myininaya (myininaya):

Since 3(37)= 111 we have 3| 1 6 10 3 | 3 27 111 =================== 1 9 37 | <----This last number will be our Remainder

myininaya (myininaya):

What is the remainder?

myininaya (myininaya):

What operation do we perform on the 3 and 111?

myininaya (myininaya):

The numbers are vertical and I said the operation you perform is....?

OpenStudy (kingj):

you add the 3 and 111

myininaya (myininaya):

:) Right! Perfect!

myininaya (myininaya):

3| 1 6 10 3 | 3 27 111 =================== 1 9 37 | 114 Ok so we have 1x^2+9x+37+114/(y+3)

OpenStudy (kingj):

so we divide n i should have my answer

myininaya (myininaya):

We are done

myininaya (myininaya):

We already divided

OpenStudy (kingj):

so the answer would be y2+3y+1

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