exam Maths Puzzle Numerical Ability

factoring: Problem - 3x^2 + 243
First answer 3(x^2 + 81)and then
I put 3(x + 9) * (x - 9), is this correct?

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exam Other Question

Name the values of the characteristics of the following quadratic equations

2. f(x) = 3(x - 5)^2 + 2 3. g(x) = -4x^2 - 8x - 3
axis of symmetry,
vertex
Max or Min point
Range
x-intercepts
amplitude
Find the slope and y-intercept of the line represented by each of the following equations.

2x - 3y = 6