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Using long division, clearly showing your method, please calculate 1878 / 3

Full method using long division must be shown to reach answer of 626

2273 Views

Solve these simultaneous equations 5x + y = 21, x- 3y = 9

rearrange the first equation so it reads y= 5x+y= 21 y=21-5xSubstitute this y value into the second equation x-3y=9 y=21-5x x-3(21-5x)=9Expand out the bracket and rearrange to find out w...

Answered by Harriet W. • Maths tutor

2883 Views

Whats the Product rule for differentiation and how does it work?

We use the product rule when we want to find the derivative of a product of two functions using their individual derivatives, the product rule can be written out as the following formula: fg'(x) = f(x)

Answered by Joe M. • Maths tutor

4280 Views

How to expand and simplify expressions

Depending on the expression how to expand and simplify is different. Commonly for two brackets back to back these are expanded by the FOIL method. Multiply together the two first parts of the brackets, th...

Answered by Jake W. • Maths tutor

4077 Views

Evaluate 5/(x−1)+2/(x+4)

we need to have a common denominator (bottom number the same) to be able to add or subtract fractionsmultiply first fraction by (x+4) on numerator (top) and denominator (bottom)multiply second fraction by...

Answered by Claire W. • Maths tutor

2935 Views