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Maths
GCSE

Expand and simplify (x+4)(x-3)

We need to multiply out each bracket and it is best to do this systematically, multiplying each term in the left hand bracket by each term in the right hand bracket. (x+4)(x-3) = (X x X) + (X x -3) + (4 x...

EM
Answered by Eleanor M. Maths tutor
31051 Views

There are 300 passengers on a plane, 7/20 of them are men, 30% are women, the rest are children. Work out the number of children.

300 x (7/20) = 300/20 x 7 = 15 x 7 = 105 = number of men on the plane.

300 x 0.3 = 90 (Or 300/10 x 3) = number of women on the plane.

105 + 90 = number of adults on the plane = 195.

3...

HT
Answered by Hannah T. Maths tutor
4958 Views

2x + 4 > 16

Step 1- Get all the numbers on one side of the inequality sign and all the letters on the other side. Remember when a number is moved to the other side of an inequality, the sign infront changes from eith...

GW
Answered by Gemma W. Maths tutor
2919 Views

How do you simplify expressions involving different powers?

Let's answer the question by solving an example:

Take (8x2 * 5x4 * 2y3)/(20x3). Firstly, let's take a look at the first bracket and rearrange it so we ha...

PW
Answered by Patryk W. Maths tutor
3290 Views

How do you find the length of the longest side of a right-angled triangle?

First of all, I would ask the student what they think the question means and whether they have encountered a question like this before, so that I know where to start from. If the student is more of a visu...

ET
Answered by Eddie T. Maths tutor
4202 Views

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