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Maths
GCSE

Factorise x^2 + 2x – 15

What helps to factorise quadratic equations is to remember the rule that the number without a coefficient must be multiplied into. Since this is negative above, it means one of the factor terms must be ne...

AM
Answered by Ali M. • Maths tutor
4666 Views

Expand and simplify (x-2)(x-4)

One of the methods to answer this question would be the FOIL methodFirst Outer Inner LastStart by multiplying the First terms in each bracket and then the Outer and so on with Inner and Lastxx = x

IS
Answered by Ibrahim S. • Maths tutor
11230 Views

If a right-angled triangle has one side measuring 8cm and another measuring 15cm, what is the length of the hypotenuse?

What is meant by the word hypotenuse?The hypotenuse is the side of a triangle opposite to the right angle. It is the longest of the three sides and can often be identified as the 'diagona...

RR
Answered by Rosanna R. • Maths tutor
4706 Views

Find the turning point of the graph y = x2^ + 3x − 10

the turning point of curve is when the gradient of the curve is 0. to find the gradient of the curve, we need to differentiate the curve.y = x2 + 3x - 10dy/dx = 2x + 3gradient = 2x + 3 = 02x = ...

EG
Answered by Estella G. • Maths tutor
5779 Views

How do you solve a quadratic equation? eg: x^2 + 2x - 8

Well, when solving quadratic equations we have two options, either A: factorize the equation and solve or B: Use the '-b' formula. Option A is usually a lot quicker but does require you to practice factor...

AK
Answered by Ahad K. • Maths tutor
3117 Views

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