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


x2 +10x-3=(x+5)2-25-3= (x+5)2 -28

CT
Answered by Carmen T. • Maths tutor
7007 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 e...

JQ
Answered by James Q. • Chemistry tutor
115895 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

LM
Answered by Lucy M. • Maths tutor
14039 Views

what is a catalyst

A substance that increases the rate of a reaction without having been used up itself in the reaction. They function by providing a lower activation energy for the reaction to begin, which is a type of thr...

SC
Answered by Samuel C. • Chemistry tutor
2359 Views

Calculate 7.6 x 32.5

Treat both numbers as whole numbers - i.e 76 x 325 (remember at the end that there are still decimals!) 76 x 325 = 24,700 ( This will be explained by using the two lines by 1st method or method that the s...

JH
Answered by James H. • Maths tutor
3555 Views

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