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Show that (4x – 5)^2 – 5x(3x – 8) is positive for all values of x

(4x-5)^2-5x(3x-8)

(16x^2-40x+25)-(15x^2-40x)

16x^2-15x^2-40x+40x+25

x^2+25

if x = positive, x^2 will be positive.

if x = negative, x^2 will be positive.

x^2 is po...

JM
Answered by Joseph M. Maths tutor
3394 Views

GCSE Chemistry- Describe the structure of an atom?

Atoms have a small nucleus surrounded by electrons. The Nucleus- It is in the middle of the atom It contains protons and electrons Protons are positively charged +1 Neutrons have n...

UI
Answered by Umair I. Chemistry tutor
2228 Views

(See word doc for complete info) An experiment is carried out whereby the decomposition of hydrogen iodide is observed. Given the equilibrium compositions of each species, calculate the initial mass of hydrogen iodide.

(See word doc for step by step solution)

AL
Answered by Anil L. Chemistry tutor
2228 Views

Can you outline John Stuart Mill's Theories on Utilitarianism?

John Stuart Mill - Background Connection to Bentham Utilitarianism Harm Principle Individual Sovereignty Higher and Lower Pleasures

JD
2337 Views

Explain how a blood clot can cause a heart attack?

A blood clot or thrombus is formed pathologically in the blood stream when the clotting cascade is activated inappropriately. This commonly occurs over the rough vessel surface during atherosclerosis of a...

AK
Answered by Alex K. Biology tutor
7757 Views

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