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Maths
GCSE

How do I factorise quadratic equations?

Take the example x+ 5x + 6.You need to think of 2 numbers that multiple together to make 6, and add together to make 5. Therefore in the brackets we need 2 and 3. As all the signs are positiv...

Answered by Adam S. Maths tutor
3979 Views

How to solve the simultaneous equations 3x+2y=7 and 5x+y=14

Firstly we rearrange one of these equations so that we have y on one side of the equation on its own. Let's do this with the second equation.

So from 5x+y=14, we can minus 5x from both si...

Answered by Imogen B. Maths tutor
8138 Views

How would you solve a quadratic equation by factorising?

Solve the equation :  x2 - 8x + 15

The first step is to factorise the quadratic equation.

1. You must find two numbers which will add to g...

Answered by Angelin G. Maths tutor
4437 Views

If (2/3)^n=〖(3/2)〗^2 what is the value of n

Reciprocal is when you interchange the numerator (the number on top in a fraction) with the denominator (the number at the bottom in a fraction). The numerator, is now the denominator and the denominat...

Answered by Gift W. Maths tutor
14599 Views

A quarter circle represents a piece of land. The length of the straight sides is 100 ft each. If the land is enclosed by a fence, what is closest to the length, in feet, of the fence?

Perimeter of a quarter circle = (2πr)/4

r = 100ft

P = (2πr)/4 = (2×3.14×100)/4 = 157

Because we are calculating the length of the fence – as the fence goes aro...

Answered by Gift W. Maths tutor
6604 Views

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