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When I multiple two negative numbers together is my answer positive or negative?

My favourite way to remember whether my answer is positive or negative when I multiply two numbers is to think of the following: a) If you multiply two numbers with the SAME sign (i.e. two positive numbers o...
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Answered by Hannah S. • Maths tutor
5299 Views

Expand and simplify the following; (2 + 3^0.5)^2 - (2 - 3^0.5)^2

(2 + 3^0.5 )^2 - (2 - 3^0.5 )^2 Firstly we will start by seperating the 2 brackets. This will give us 1 : (2+ 3^0.5 )^2 2 : (2 - 3^0.5 )^2 We will start by expanding our brackets. To do this we use the rule;...
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Answered by Mickey N. • Maths tutor
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A bullet is fired horizontally from a rifle 1.5m from the ground at 430m/s. How far does it travel and for how long does it travel before it hits the ground?

A bullet is fired horizontally from a rifle 1.5m from the ground at 430m/s. How far does it travel and for how long does it travel before it hits the ground? Assuming that air resistance is negligable What's...
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Answered by Tim A. • Physics tutor
104184 Views

What is the intergral of 6.x^2 + 2/x^2 + 5 with respect to x?

What is the intergral of 6.x^2 + 2/x^2 + 5 with respect to x ? To answer a question like this you would intergrate each phrase of the addition in turn with respect to x . To intergrate a single c.x^n phrase ...
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Answered by Tim A. • Maths tutor
6516 Views

What is the difference between the passato prossimo, the passato remoto and the imperfetto? - See more at: https://www.mytutorweb.co.uk/tutors/secure/ta-yourexplanations.html#sthash.IFYOERg2.dpuf

All three of these indicate actions which occured in the past, but vary depending on duration and relevance to the present time. The passato prossimo is used for past events which have just happened and are ...
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Answered by Emily D. • Italian tutor
4530 Views