## O-Level Elementary Math

- KSP2013777
- OrangeBelt
**Posts:**92**Joined:**Fri Dec 28,

- Future Academy
- GreenBelt
**Posts:**129**Joined:**Mon Aug 24,**Total Likes:**3

### Re: O-Level Elementary Math

KSP2013777 wrote:Thank you very much, Future Academy. Your working is very clear.

You are welcome!

This question is not very straight forward. It is considered as a challenging E Math question.

Please be reminded that step-by-step working is expected if you want to score full marks (including all method marks) for it.

Cheers!

- questionable_i
- BrownBelt
**Posts:**535**Joined:**Sat Oct 10,**Total Likes:**1

### Re: O-Level Elementary Math

Can anyone help me with this question Q1)(c)(ii), I need it urgently. Thank you in advance.

http://oi67.tinypic.com/j8fq5y.jpg

http://oi67.tinypic.com/j8fq5y.jpg

- Future Academy
- GreenBelt
**Posts:**129**Joined:**Mon Aug 24,**Total Likes:**3

### Re: O-Level Elementary Math

questionable_i wrote:Can anyone help me with this question Q1)(c)(ii), I need it urgently. Thank you in advance.

http://oi67.tinypic.com/j8fq5y.jpg

Please let us know if you need further explanation, our team of ex IP school/RGS/NYGH teachers are here to support.

- questionable_i
- BrownBelt
**Posts:**535**Joined:**Sat Oct 10,**Total Likes:**1

- Future Academy
- GreenBelt
**Posts:**129**Joined:**Mon Aug 24,**Total Likes:**3

### Re: O-Level Elementary Math

questionable_i wrote:Can anyone help me to convert 12m/s^2 to m/s with working. Thank you

Hi,

12 m/s^2 and m/s have different units. Cannot do conversion directly.

Maybe you can provide more information in the question?

Cheers

- Jeffrey Goh
- KiasuNewbie
**Posts:**3**Joined:**Fri Oct 21,

### Re: O-Level Elementary Math

boinbi wrote:The answer is x+y=1. But I don't know how to get the answer.

Since the equation has EVEN power index, therefore, it is always positive.

In order to have the sum of (x+4)^50 + (y-5)^100 = 0,

Therefore,

(x+4)^50 = 0 and (y-5)^100 = 0

Hence,

x = -4 and y = 5

Therefore x + y = 1.

Done by Jeffrey Goh on 21st Oct 2016. Hp: 9636-4921

Cheers.