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Simplify fully (x^2 + 3x)/(4x + 12)

You should begin by factorising the numerator and denominator, in order to determine what would go into both parts of the fraction.As you can see, x 2 and 4x have 'x' in common, and 3x and 12 have '3' in com...
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Answered by Matthew J. • Maths tutor
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What is the maximum frequency photon of one of the photons produced when a electron and positron annihilate each other?

First we must remember that a positron is the antiparticle of the electron, meaning that they will both have the same amount of rest energy (0.510999 MeV) however since annihilation produces 2 gamma photons ...
Answered by • Physics tutor
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Simplify completely: 3x^2 - 14x +5 /2x^2 -10x

Ideally you're aiming to find common factors on both sides of the fraction that cancel out. Firstly we can break this question down into two bits. First bit is factorising 3x^2 -14x+5. Factorizing this would...
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Answered by Diya B. • Maths tutor
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Write x^2 + 6x - 10 in the form ((x+a)^2)+b?

To find the value of a divide the coeffecient of x. Here this would be 6/2 which = 3. If we were to expand (x + 3)^2 + b this would give us:x^2 + 3x +3x + 3^2 +b which simplifies to x^2 + 6x + 3^2 + b. If we...
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Answered by Gunalini G. • Maths tutor
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Compare how pyruvate is used in human cells when oxygen is available and when oxygen is not available.

When oxygen is available- aerobic respiration takes place, when oxygen is not available- anaerobic respiration takes place. Pyruvate reacrs differently differently in these two situations.During Aerobic resp...
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Answered by Nick P. • Biology tutor
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