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Maths
GCSE

Expand and simplify (3X+9)(X-6)=0

When expanding brackets, we need to make sure each of the terms in the first bracket are multiplied by all the terms in the second bracket (and vice versa). To make sure nothing is missed, we can used the...

WA
Answered by Wonu A. Maths tutor
3698 Views

express 63 as a product of its prime factors

Firstly, it is important to understand what a prime number is. A prime number is one that is only divisible by 1 and itself. Thus, expressing 63 as a product of prime factors means putting it into a form ...

KG
Answered by Kiesha G. Maths tutor
23638 Views

What is the square root of 25?

The Answer is +5 or -5.
A lot of people make the common mistake of forgetting -5, since two negatives multiplied make a positive.

ZM
Answered by Zahid M. Maths tutor
3257 Views

Perimeter of isoceles triangle is 24cm. Sides 'x' = x + 3, side 'y' = x + 2, calculate the area

Area isosceles = hb/2 = hy/2Perimeter = 24x+3+x+3+x+2 = 243x + 8 = 243x = 16x = 16/3h^2 = (x+3)^2 - ((x+2)/2)^2h^2 = 56h = 2 root14area = 2root14*(x+2)/2area = 13.719 to 1dp

CB
Answered by Charlie B. Maths tutor
2717 Views

Solve algebraically the simultaneous equations x^2 + y^2 = 25 y – 3x = 13

First begin with rearranging the second equation to put it in terms of Y. Then substitute by putting the second equation (y=3x+13) into equation one as Y^2. Expand (3x+13)^2 and add like terms to form 10x...

DL
Answered by Dani L. Maths tutor
2913 Views

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