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Express x^2 +10x -3 in the form (x + p)^2 + q

x 2 +10x-3=(x+5) 2 -25-3= (x+5) 2 -28
CT
Answered by Carmen T. • Maths tutor
7153 Views

Why do ionic compounds conduct electricity when molten or in solution, but not when solid?

Substances can conduct electricity if there is a way for charge to flow through that substance. For a substance to conduct electricity, it needs to contain some sort of charge carrier - this could be an elec...
JQ
Answered by James Q. • Chemistry tutor
121530 Views

Explore how the “victims” are created and used by the authors of both texts, in Toni Morrison’s “Beloved” and Oscar Wilde’s “The Picture of Dorian Gray”

[Example introduction]Victimisation is a key trope within literature, particularly in dealing with the supernatural. Both Wilde’s “The Picture of Dorian Grey” and Morrison’s “Beloved” grapple with the concep...
MB
Answered by Molly B. • English tutor
8199 Views

Why does gravitational potential energy have a negative value?

The negative value stems from the definition of gravitiational potential energy which states that it is equal to the work done by the gravitational field moving a body to its given position from infinity. At...
KP
Answered by Kush P. • Physics tutor
5012 Views

3/5 of a number is 162. Work out the number.

If we call the unknown number 'x' we can put it in to an equation to work it out as we known 5/3 of the number is 162.5x/3 = 162then times each side of the equals symbol by 5 to get (3x/5) 5 = 162 35which is...
LM
Answered by Lucy M. • Maths tutor
14277 Views