exam Maths Puzzle Numerical Ability

Graph y=(x-5)(2x+7)(3-x)^2(x-7)(x+2)^2, and label all intercepts

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exam Other Question

y={x-2}-3 Can the system
4x + 5y = -4
12x - 9y = -4

be solved more easily by using the substitution method or the addition method? And why?