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How to factorise quadratic equations?

There are different ways of factoring an equation depending on the type. A few are highlighted here: 1) Taking out a common factor General formula : ab + ac = a ( b+ c) Step 1: realise that all terms of the ...
LB
Answered by Lydia B. • Maths tutor
6732 Views

find the integral for xe^10x

for this type of question, integral by parts should be used . This involves using the formula for intregation by parts: lets first break apart the x and e 10x into two parts - "u" and "v"...
CS
Answered by Carl S. • Maths tutor
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Given a table showing grouped data and the frequency of each class, find the median Q2

Step 1: Add a cumulative frequency column to the table Step2: Use the formula n/2 (where n is the final total in the cumulative frequency column) to find the class the median, Q 2 , is in. Let n/2= a, so tha...
LS
Answered by Lesedi S. • Maths tutor
10602 Views

Solve the equation:

5 x-3 =7 2x+1 log 5 5 x-3 =log 5 7 2x+1 x-3=(2x+1)log 5 7 x-2xlog 5 7=3+log 5 7 x(1-2log 5 7)=3+log 5 7 x=(3+log 5 7)/(1-2log 5 7)
NH
Answered by Nina H. • Maths tutor
5451 Views

How do you factorise a quadratic equation?

If you are given a simple quadratic equation, for example x 2 +6x+8=0, then in order to factorise this you must find two numbers that add together to make the coefficient of x in the equation (in this case t...
ER
Answered by Erin R. • Maths tutor
6152 Views