A few days ago
Anonymous

Help with Maths?

There’s a few questions from my maths homework which i’m stuck with. Please could someone help me?

Factorise:

1) 4 – 36x^2

Simplify:

1) x^2 – 1 / x + 1

2) 4y^2 – 9 / 4y + 6

3) 8yx / 6x^3 y^2 – 4xy^2

Express as a single fraction:

1) 4 / x^2 – 5 / x

2) 1 / ab + 1 / ac + 1 / bc

Solve using the formula correct to 2 decimal places:

1) x^2 + 7x + 2 = 0

2) 10y^2 – 6y – 15 = 0

3) a + 2 / a = a / 2a – 5

Thanks for the help

Top 3 Answers
A few days ago
n

Favorite Answer

1. 4-36x^2

everything in the equation is a square, so square root everything. since the second number is negative, one of the two equations must also have the second number as negative. your answer is:

(2-6x) (2+6x)

sorry if i didn’t explain that well.

0

A few days ago
TuttiDolce
its been a long time since i’ve done these but i think the first one is this…

-1(6x+2)(6x-2)

there, you have one answer 😛

sry i can’t do dividing but just use the quadratic equation for the last 3….

hope this helped

0

A few days ago
jacquie
i dont know, but poor you.
0