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Simplify fully (y+3)^2

Firstly expand the brackets to make (y+3)(y+3)Next I find it easy to remember that you don't times anything together that's in the same bracket when expanding. So - y x y = y^2y x 3 = 3y3 x y = 3y3 x 3 = 9So...
LC
Answered by Laura C. • Maths tutor
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In a healthy person the blood glucose level in the hepatic vein fluctuates much less than that in the hepatic portal vein. Explain why.

Firstly, blood glucose in the hepatic portal vein increases after a meal and this is due to the hepatic portal vein transporting blood from the gut to the Liver. Therefore, blood glucose will increase as foo...
LG
Answered by Lucinda G. • Biology tutor
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Identify and describe the 4 elements of the Boston Matrix.

The four elements are star products, cash cows, problem children and dogs. Star products have a high market share in a fast growing market, cash cows have a high market share in a slowly growing market, prob...
LB
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How should I structure my A-level religious studies essay?

In essence the essay should follow some sort of a generic structure broken down into three parts. The first part will be your introduction and should summarise the key points of your discussion. The DISC pne...
SK
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I throw a ball straight up with an initial velocity of 2m/s. How high is it after a fifth of a second?

assign each variable to a value in s = ut + 1/2at 2 u = 2m/s t=0.2sa=-9.81m/s 2 so s = (2 x 0.2) + 1/2(-9.81)(0.2) 2 so s =
HA
Answered by Henry A. • Physics tutor
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