exam Maths Puzzle Numerical Ability

SOLVE CUBIC EQUATION X^3 + 3X^2 - 28X = 0

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exam Other Question

6*2/(-3+-3)= triangle ABC transformed into triangle A'B'C'. Find the scale factor and determine if the dilation is a reduction or an enlargement.

Ab=6 cm BC= 8cm AC= 10 cm A'B'= 24 cm B'