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Solve the simultaneous equation: y+4x+1=0 y^2+5x^2+2x=0

Rearrange the first equation to get y on its own: y=-(1+4x) Substitute into the second equation: (1+4x)(1+4x)+5x^2+2x=0 21x^2+10x+1=0 Substite into the quadratic formula to solve (-b+/-(b^2-4ac)^0.5)/2a
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Answered by George L. • Maths tutor
4237 Views

a) Simplify 2ln(2x+1) - 10 = 0 b) Simplify 3^(x)*e^(4x) = e^(7)

a) To answer this question, one must be familiar with laws of logs, more sprecifically the rules when applied to the natural log of x, and exponentials (e). 2ln(2x+1) - 10 = 0 Step 1) 2ln(2x+1) = 10 Step 2) ...
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Answered by Jordan B. • Maths tutor
14748 Views

Find the intersection points between the graphs y=2x+5 and y=x^2-9.

To do this, first draw a sketch of both graphs to see roughly what kind of result we should expect to get. We know that at the intersection points, the values of x and y for both graphs must be equal. so set...
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Answered by Srinivass B. • Maths tutor
3947 Views

Décrivez où vous habitez pour votre blog

Depuis l'âge de sept ans, j'habite à Londres. Moi, j'aime cette ville car il y a plein de choses à faire. Par exemple, le samedi dernier, je suis allée au centre-ville avec ma famille. Après avoir visité une...
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Answered by Susannah F. • French tutor
2945 Views

In terms of work experience to apply for medicine, what do you recommend and what are they looking for?

So medical schools almost require the students to have had some work experience done in a caring setting due to a number of reason: first of all it shows that you are a compassionate individual, who's able t...
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