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Where does the graph x^2-3x-4 cross the x axis?

First, you need to factorise the quadratic:x 2 -3x-4=0(x-4)(x+1)=0Then, set each of the brackets to equal 0 and solve for x:x-4=0 --> x = 4x+1=0 --> x=-1
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Answered by Sarah B. • Maths tutor
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How do I approach an unseen poem in an exam?

An exam question asking your thoughts on an unseen poetry is assessing your ability to understand the key message and techniques of a written piece of work. The important thing to remember with this sort of ...
HW
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What is Agnosticism?

The belief, that one cannot know if (a) God exists.
LB
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Describe the bonding between sodium and chlorine in NaCl

Sodium donates its outer shell (valence) electron to chlorine, so that both have a full outer shell. Sodium and chlorine are then held together by electrostatic forces of attraction between the positively ch...
SB
Answered by Sarah B. • Chemistry tutor
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Translate the following: "In Deutschland feiern wir viele Feste. Ostern und Weihnachten sind die größten Feste. Natürlich gibt es auch noch mehr Feiertage, aber an den anderen gibt es normalerweise keine Geschenke."

In Germany we have many celebrations. Easter and christmas are the biggest ones. Of course there is more celebrations, but usually on the others there is no presents.
LB
Answered by Lara B. • German tutor
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