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Solve the quadratic 2x^2+7x+6 by completing the square

All quadratic equations take the general form: ax 2 +bx+c=0 The first step used to comlete the square is to divide the whole equation by the a term, in our case 2 : 1) x 2 +(7/2)x+3=0 We then move our c term...
HN
Answered by Henry N. • Maths tutor
17625 Views

How do you find the length of a side of a right angled triangle when given the other two side lengths?

First, you have to work out whether the side you need to find is the hypotenuse or not. The hypotenuse is the longest side of the triangle, opposite the right angle. For this question, you use Pythagoras' th...
LH
Answered by Laura H. • Maths tutor
9140 Views

How do I solve simultaneous equations when one of the equations is not linear?

Sometimes you are asked to solve simultaneous equations where one of the equations has an x 2 and/or a y 2 in it - this is called a non-linear equation. This kind of question can look very complicated but on...
KB
Answered by Kristen B. • Maths tutor
9859 Views

How do you find an angle in a right-angled triangle when you are given two of its side's lengths?

You must first identify the names of the two sides in relation to the angle you are trying to find out. The technique "sohcahtoa" is generally very helpful in working this out. This abbreviation st...
TW
Answered by Toby W. • Maths tutor
4834 Views

How do you work out the length of one of the sides of a right-angled triangle given the other two?

You must first identify which sides you are given. If you have been given both sides which are not the hypotenuse (the longest side opposite the ninety degree angle) then you can use the equation: a^2 + b^2 ...
TW
Answered by Toby W. • Maths tutor
5786 Views