Help with this question C1 Maths
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Original post by bobjon22444
can someone give me a method to work out these type of questions please
thank you
thank you
Why don't you try taking a factor of x out from the first bracket?
Original post by bobjon22444
can someone give me a method to work out these type of questions please
thank you
thank you
Expand, collect like terms, and then factor out x.
For part b factorise the quadratic inside the bracket.
Original post by Zacken
Why don't you try taking a factor of x out from the first bracket?
Original post by Ryan14
Expand, collect like terms, and then factor out x.
For part b factorise the quadratic inside the bracket.
For part b factorise the quadratic inside the bracket.
Original post by Nowen
start by expanding the double bracket
I approve ...
Original post by Ryan14
Expand, collect like terms, and then factor out x.
For part b factorise the quadratic inside the bracket.
For part b factorise the quadratic inside the bracket.
Original post by Nowen
start by expanding the double bracket
Oi, no! Why would you make him go through all that extra trouble of expanding the first two brackets?!
Original post by Zacken
Oi, no! Why would you make him go through all that extra trouble of expanding the first two brackets?!
because this is sensible for typical students
Original post by TeeEm
because this is sensible for typical students
But, the x is right there.
Original post by Zacken
But, the x is right there.
I know but it safer for the typical student to expand
Original post by TeeEm
because this is sensible for typical students
I agree with Zacken - most students will spot a common facotr of x - no need to expand.
Original post by Nowen
But for someone who is struggling to understand the question, wouldn't expansion make a lot more sense to them?
Turning the thing into a cubic would make it easier?
Original post by Muttley79
I agree with Zacken - most students will spot a common facotr of x - no need to expand.
Firstly you still need to expand
Secondly you are entitled to agree with Zacken or any Zacken... why are you not quoting him and say "I agree with you" and you quoting me instead.
Do you think my credibility in this room is in question if you agree with someone else?
Original post by Zacken
Turning the thing into a cubic would make it easier?
Since you have to expand anyway and the cubic is easy to factorise, I would say the cubic approach is fine here. And the other method is equally good.
But normally I would advise students to avoid expanding into a cubic if possible.
Original post by TeeEm
Firstly you still need to expand
Secondly you are entitled to agree with Zacken or any Zacken... why are you not quoting him and say "I agree with you" and you quoting me instead.
Do you think my credibility in this room is in question if you agree with someone else?
Secondly you are entitled to agree with Zacken or any Zacken... why are you not quoting him and say "I agree with you" and you quoting me instead.
Do you think my credibility in this room is in question if you agree with someone else?
You doubted his suggestion which is just as valid as yours.
You underestimate the ability of maths students to take out a common factor first which makes the question so much easier.
Try to take out X as a factor (:
well that escalated quickly.
Original post by bobjon22444
well that escalated quickly.
Apologies for the drama, ignore it - it's not a usual occurrence. Did we answer your question or do you need further clarification?
Original post by bobjon22444
can someone give me a method to work out these type of questions please
thank you
thank you
X(X-3)(X+2)
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