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ForA=2x^2 –18x+80 (i) find dA/dx , (ii) find the value of x for which A is a minimum

dA/dx = 4x -18 : multiply the number before the x (coefficient) by the power and minus 1 from the power.4x = 18 so x = 4.5 to find the minimum or maximum point, make the differential equal to 0 and solve for...
DA
Answered by Dan A. • Maths tutor
6868 Views

Solve x^3+20x^2=125x

The expression can be rearranged to equal 0 by taking the 125 to the other side. To do this the opposite thing has to be done, so 125 must be subtracted to get x^3+20x^2-125=0 . All parts in this function in...
IZ
Answered by Isabella Z. • Maths tutor
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Expand (2x + 3)(x - 1)

everything in the first bracket should be multiplied by everything in the second individually. Then you should combine common factors to find the final answer.Starting with the first part of the 1st bracket ...
SM
Answered by Sahil M. • Maths tutor
11071 Views

Explain two ways in which practising Ahimsa influences Hindus today

Many Hindus are vegetarians because they believe that non-violence applies to animals as well as humans.They also practice non-violence due to their belief in karma and that by harming others it will bring t...
MN
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What happens prior to and during mitosis?

Mitosis is the process in which a cell divides into two new cells. Cells contain DNA in the form of chromosomes as well as organelles such as ribosomes and mitochondria. Therefore if a cell is to divide into...
JD
Answered by James D. • Biology tutor
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