You are Here: Home >< Maths

# Algebra - Are my answers right to these questions? watch

1. 1) a) 3a b) 8d c) 6x+2y d) 2x+9y
2) a) d5 b) 16ef c) g9 d) h7
3) a) 2a + 6 b) 6u - 15 c) 3x2 + 2x d) 4b2 -6b
4) a) y2 + 3y + 3 b) 6w4 - 9 c) 6p2 - 5p - 1 d) q2 - 1
5) a) 2(2 - 5x) b) 2(3x + 1y) c) -4(1x + 2) d) 2a(5 + 4a) e) 3b(3b - 1c)
2. bump
3. Retry question 4b.
4. And question 4c... -2p +3p = does that not equal 1p?
5. (Original post by starfab)
Retry question 4b.
Is it 6w4 + 9?
6. (Original post by Maths_English)
Is it 6w4 + 9?
It was -9.
Where did you get the 6 from?
7. And retry 1d and 4a
8. (Original post by starfab)
It was -9.
Where did you get the 6 from?
(w - 3) (w - 3)
w2 - 3w - 3w + 9
w2 + 6w2 + 9
6w4 + 9
9. (Original post by Maths_English)
(w - 3) (w - 3)
w2 - 3w - 3w + 9
w2 + 6w2 + 9
6w4 + 9
10. (Original post by Stevo F)
And retry 1d and 4a
They are correct, no?
11. (Original post by starfab)
Thank goodness, I thought I misunderstood algebra again so apart from that one the rest are correct?
12. (Original post by Maths_English)
(w - 3) (w - 3)
w2 - 3w - 3w + 9
w2 + 6w2 + 9
6w4 + 9
As an example:
X^2 + x^2 = 2x^2
X^2 × x^2 = x^4
-2x - 2x = -4x
I think this is where you're going wrong...
13. (Original post by Maths_English)
Thank goodness, I thought I misunderstood algebra again so apart from that one the rest are correct?
As far as I know, yes. You just need to change that to what you just worked out rn.
Though my maths is quite rough, so I wouldn't rely on me.

edit, wait looks like I got this wrong. idk now
14. 1d incorrect - check your pluses and minuses again: `-3x + 2y - 5x + 7y`.

4a, 4b, and 4c are also incorrect, so I recommend you work on your multiplying out brackets. I recommend using a grid for it - I'll attach an image of what I mean (if I work out how to, I literally just made an account).

All of 2 and 5 look correct, though, so you're doing pretty well on that front c:
15. (Original post by starfab)
No that's not right...
16. I'm getting mixed responses here, what is the overall agreed answers that are incorrect?
17. (Original post by Stevo F)
No that's not right...
Besides that,do you agree the rest is correct?
18. (Original post by Maths_English)
I'm getting mixed responses here, what is the overall agreed answers that are incorrect?
1(d), 4(a), 4(b), 4(c) are incorrect
19. (Original post by Maths_English)
(w - 3) (w - 3)
w2 - 3w - 3w + 9
w2 + 6w2 + 9
6w4 + 9
(w-3) (w-3)
w^2-3w-3w+9
w^2-6w+9 ... Thats how I worked this out.
20. (Original post by justinawe)
1(d), 4(a), 4(b), 4(c) are incorrect
Recheck these OP. when - × - then it changes to +.

### Related university courses

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: March 9, 2018
Today on TSR

### A level Maths discussions

Find out how you've done here

### 1,162

students online now

Exam discussions

Poll
Useful resources

### Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

### How to use LaTex

Writing equations the easy way

### Study habits of A* students

Top tips from students who have already aced their exams