Hi

Please help.

Thank you

Secondary Two Maths.

Factorise

1) -6x^2 + x + 1

2) -5x^2 + 63x - 36

Sec Two Maths

Expand and simplify
(3x+7y)^2 – (-2x-3)^2

(^2 means to the power of 2)

Please help.

Thank you.

Hi

Is there a difference between simplification and factorisation of algebraic expressions?

Please help.

Thank you.

FrekiWang wrote: 5z^2-30z=5(z^2-6z)=5(z^2-6z+9-9)=5(z^2-6z+9)-45=5(z-3)^2-45

Hi

Please explain in more details how you get this.

5z^2-30z=5(z^2-6z)=5(z^2-6z+9-9)=5(z^2-6z+9)-45=5(z-3)^2-45

Thank you

Sec Two Maths

Find the smallest possible value of the expression 3x^2 + 27y^2+5z^2-18xy-30z+125.

Note a) ^2 means to the power of 2

Please help.

Thank you

Sec Two Maths

1) Given that x^2 = 5x – 1, find the value of 2x^4 + 2/x^4

2) a)Factorise 2x^10 – 13x^5 -15 completely.
b)Factorise 10x^10y – 65x^5y-75y

Note a) ^2 means to the power of 2 b) 2/x^4 means 2 divided by x^4

Please help.

Thank you

Secondary Two Maths

Hi

Solve this equation
(x-2)^2 = 3(2x-3)(2-x)

(x-2)^2 means (x-2) to the power of 2.

Please help.

Thank you.

Hi Teacher Guan Hui Please help. 1)Mrs Lee has 2 daughters,Alice and Judy.The highest common factor and lowest common multiple of their ages are 3 and 168 respectively.If Alice is 3 years older than her sister, find her age. 2)The HCF and LCM of 270 and A are 18 and 5940 respectively. What is the va...

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Thank you for your help. Simon has some money. He spends $10 on 3 exercise books and 7 pencils. He will be short of $0.40 if he were to buy another exercise book. He will have $0.60 left if he were to buy one more pencil. (a) How much does each exercise book cost? (b) How much money does Simon have?