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A) 6n - 12

B) p(p-5)

21/root 7 = 21root7/7 = 3root7

k = 3

A) 15x² +7

B) 30x

y-y1=m(x-x1)

y-4=1.5(x-2)

y-4=1.5x-3

y=1.5x+1

To get dy/dx from a formula y in terms of x we must differentiate y with respect to x. Generic formula for term differentiation: d/dx(ax^b) = bax^b-1 = times the coefficient by the power and minus the pow...