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Maths
GCSE

Help! How do I solve quadratic equations?

Quadratic equations contain the term x2 and they can normally be written in the format of:ax2 + bx + c = 0. You can solve these equations by using a technique called factorisation. F...

Answered by Michael H. Maths tutor
1557 Views

x^2-x-12

To factorize this you need to find two numbers that have a sum of -1 and a product of -12. Start y finding the pairs of numbers the times to make -12; (-1,12), (-2,6), (-3,4), (1,-12), (3,-4), (2,-6). Nex...

Answered by Gemma S. Maths tutor
1560 Views

Why do we use trigonometry and how to we get the sine, cosine, and tangent graphs?

The three trigonometric functions sine, cosine, and tangent are derived from looking at the ratios of side lengths in a right-angled triangle. (Triangle drawn and side lengths annotated H=hypotenuse, A=ad...

Answered by Louis C. Maths tutor
2025 Views

Factorise and solve 3x^2-x-10=0

Firstly I check that the equation is of the form ax2 +bx+c=0 , here it is in such form as a=3 b=-1 c=-10. Because it is a quadratic equation, it can be factorised into 2 brackets. In each brack...

Answered by Matthew U. Maths tutor
2053 Views

How do i solve quadratic equations?

Quadratic equations have a variable usually the letter x (but it could be any letter or symbol in theory).The value of x is unknown but you can work it out after following a few simple steps. Here is an e...

Answered by Charlotte H. Maths tutor
1595 Views

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