A clothes shop has some special offers. T-shirts are buy one get one free and jumpers are 3 for 2.
The normal price of a T-shirt is £4.80 and the normal price of a jumper is £14.60.
How much does it cost to get 5 jumpers and 4 T-shirts using this offer as appropriate?

answer: apothems is your answer

step-by-step explanation: hope u get it right

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let's call the solutions x₁ = (5 - 2√7)/3 and x₂ = (5 + 2√7)/3

then the equation is (x-x₁)(x-x₂) = 0

if you fill that in you get a lot of numbers which you can recognize as ax²+bx+c=0.

step-by-step explanation:

you can see that a=1 (there is just an x²)

b = (-5 -2√7 + 2√7 - 5)/3 = -10/3

c = -2√7)/3 ) * (-5+2√7)/3) = -1/3

so your answer is 3x^2 – 10x – 1 = 0

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