exam Maths Puzzle Numerical Ability

Solve. -9(x - 3)^2 = -7

Another difficult problem that I need help with, please.

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exam Other Question

Hello, I need help with some domain problems,the first problem is,solve y= -2x+7 if the domain is {-2,0,4,7}.The next one is,find the domain of x minus 2y=1 if the range is {-2,0,5 Find the horizontal and vertical asymptotes of the following:

A) f(x)= 2x+3/x+2

B) g(x)= 5x / x^2+1