Top answers

Why is it that when I am asked to factorise 3x^2-13x-10, I am not able to cancel two of the x's so that the answer is 3x-13-10?

This is because to be able to cancel an 'x' in the equation the 'x' needs to be multiplying every constant. For example, if you were to think of the 'x' as equaling 3 in the question above, then the 10 would...
VW
Answered by Victoria W. • Maths tutor
4660 Views

What is the function of the cell nucleus?

The nucleus contains genetic material which controls the activities of a cell
LC
Answered by Lydia C. • Biology tutor
5684 Views

What's Pythagoras Theorem and how can I use it?

Pythagoras theorem is: A^2 + B^2 = C^2. This might look confusing but it is actually quite simple. Pythagoras can only be used on a RIGHT ANGLED TRIANGLE! Then what you do is that the side of the triangle OP...
GS
Answered by Gabrielle S. • Maths tutor
3807 Views

Simplify. (x(^2)+4x)/(x(^2)+3x-4)

To start with trying simplify any equation, you need to first see if the top part of the equation and the bottom part can be factorized. Fortunately the top part and bottom part of the equation are both quad...
JR
Answered by Jack R. • Maths tutor
7656 Views

What's the difference between "Ser" and "Estar"?

Both verbs mean "to be" but the key difference is in the permanence of what they are describing. "Ser" is used when you're describing an essential characteristic of the person or thing, w...
EH
Answered by Emily H. • Spanish tutor
2965 Views