Edexcel C3 Remainder Theorem, HELP!!!!
Hella kind helpers
I'm stuck at the remainder theorem and its identities when it comes to solving equations, Let me elaborate.
I've got a question where I'm supposed to divide a polynomial by a linear equation using some remainder theorem identity. Anyone?
I'm stuck at the remainder theorem and its identities when it comes to solving equations, Let me elaborate.
I've got a question where I'm supposed to divide a polynomial by a linear equation using some remainder theorem identity. Anyone?
(edited 8 years ago)
Original post by Hamoody96
Hella kind helpers
I'm stuck at the remainder theorem and its identities when it comes to solving equations, Let me elaborate.
I've got a question where I'm supposed to divide a polynomial by a linear equation using some remainder theorem identity. Anyone?
I'm stuck at the remainder theorem and its identities when it comes to solving equations, Let me elaborate.
I've got a question where I'm supposed to divide a polynomial by a linear equation using some remainder theorem identity. Anyone?
Post the question?
Original post by BuryMathsTutor
Post the question?
There you go. Thanks
Original post by Hamoody96
There you go. Thanks
There you go. Thanks
According to the remainder theorem,
Unparseable latex formula:
\[F(x)\equiv Q(x)\cdot D(x) + R
I've put your question in that format:
Unparseable latex formula:
x^{3}+x^{2}-7 \equiv (Ax^{2}+Bx +C)(x-3) +D\]
Now why don't you try solving it? Comparing coefficients and letting x be certain values might help.
Original post by aymanzayedmannan
According to the remainder theorem,
I've put your question in that format:
Now why don't you try solving it? Comparing coefficients and letting x be certain values might help.
Unparseable latex formula:
\[F(x)\equiv Q(x)\cdot D(x) + R
I've put your question in that format:
Unparseable latex formula:
x^{3}+x^{2}-7 \equiv (Ax^{2}+Bx +C)(x-3) +D\]
Now why don't you try solving it? Comparing coefficients and letting x be certain values might help.
Its that part after setting up the identity that baffles me
How do I solve it? Like the book used two values, 3 and 0. Where did those come from?
Original post by jjnero
This could help
This could help
So like we set up the identity and then do a long division and plug in the relative values or what?
Original post by Hamoody96
Its that part after setting up the identity that baffles me
How do I solve it? Like the book used two values, 3 and 0. Where did those come from?
How do I solve it? Like the book used two values, 3 and 0. Where did those come from?
I would suggest not to carry out long division first. It wastes valuable time. Do it directly via the remainder theorem. I'll give you one example - when you set x = 3, what do you get? The quadratic disappears, right? Also try thinking about the coefficients of each x term. compare the LHS to the RHS. When you compare x^3 on the LHS to x^3 on the RHS, what is the result?
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