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Factorise 2x^2+5x - 3

When factorising a quadratic expression the aim is to put the expression into brackets. Step 1: Label each expression as a b c2x2 = a 5x = b -3 = cStep 2: Multiply a with c number 2 * -3 = -6 Step 3: Know...

VA
Answered by Victoria A. Maths tutor
5096 Views

Factorise x² + 6x + 8

A quadratic equation is written in the form: ax2 + bx + cTo factorise, we need to know what 2 numbers multiply to make ac and add to make bac= 8b=64 x 2=8 4+2 = 6We replace b for these two numb...

LM
Answered by Laila M. Maths tutor
6418 Views

Describe and explain how the alveoli are adapted to perform efficient gaseous exchange

The alveoli are arranged in clusters at the end of the bronchioles in the lungs. The lungs contain an extremely large surface area of alveoli (around 70m2) which acts to provide the maximum space for the ...

JP
Answered by Joe P. Biology tutor
6271 Views

Prove that the sum of squares of the first n natural numbers is n/6(n+1)(2n+1)

In order to do this we must follow the standard procedure for a proof by induction which is to first check a base case:Let n = 1, then the sum can be written as 12 = 1/6(1+1)(2+1) = 1 as requir...

TD
5202 Views

How might we implement the bubble sort algorithm in Python

Largely shown in code with a talk-through of what I'm doing. First discuss what the algorithm is doing, then talk through Python implementation with pythonic practices in mind e.g. why use a function, and...

TD
1984 Views

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