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Solve simultaneously: x + y + 3 = 0 and y = 2x^2 +3x - 1

First Step:

I believe here it is important to firstly look at each equation on its own and just try to think how the examiner would want you to answer this type of question.

Answered by Jamie S. • Maths tutor

4800 Views

Solve the equation; 4 cos^2 (x) + 7 sin (x) – 7 = 0, giving all answers between 0° and 360°.

4 cos² (x) + 7sin (x) – 7 = 0 (1)

Using the identity sin² (x) + cos² (x) = 1,

rearrange to give; cos² (x) =...

Answered by Connor S. • Maths tutor

18827 Views

Solve X^2 +13X+48=12

It is first important to get the equation to equal 0, so to do this you minus 12 from each side of the equals symbol, giving youX^2 +13X+36=0Now it is time to think about factorising!The best trick for th...

Answered by Kemba M. • Maths tutor

6107 Views

How should I approach my GCSE maths paper?

The way that papers are set is that you usually can allow just over a minute for each mark. This means if a question is 6 marks, it should take about 6 minutes to answer. It is generally a good idea to be...

Answered by Kemba M. • Maths tutor

6321 Views

Find the coordinates that correspond to the maximum point of the following equation: y = −16x^2 + 160x - 256

To solve this problem, the maximum and minimum points of equations can be deduced through the differentiation process. This looks at the gradient of the function and the maximum/minimum value occurs wh...

Answered by Michael W. • Maths tutor

3276 Views