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Factorise a^2 + a - 30

This is a quadratic equation in the form ax²+bx+c. As the three terms don't have a common factor we cannot factorise this into one bracket, instead we will factorise it into two. In order to do...

Answered by Isabella G. • Maths tutor

3589 Views

Factorise x^2+3x-4

Answer is:(x-1)(x+4)

Answered by Tahmina A. • Maths tutor

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y = e^(e^x). Show that the curve has no maxima or minima for any real number.

dy/dx = (e^x)*(e^(e^x)) which is never equal to zero so it does not have any maximum or minimum.

Answered by Pablo M. • Maths tutor

1112 Views

Ms Henderson has two jars of sweets. The jars contain the same number of sweets in total. 25% of the sweets in Jar A are mint. Two fifths of the sweets in Jar B are mint. There are 10 mint sweets in Jar A, how many mint sweets are there in Jar B?

For this question we should be familiar with percentages and their equivalents in fraction. Since they have the same number of sweets, we calculate first the total number of sweets there is in the jars an...

Answered by Pablo M. • Maths tutor

2790 Views