125s Classroom → 35s Sub-90 Target27-Q Mathematics 1 Mock
Archetype Sub-90 Dry-Wipe Invariant (Surd Rationalisation, Difference-of-Squares & Laws of Indices): Factor out common surds before rationalising; memorise (a + b*sqrt(n))(a - b*sqrt(n)) = a² - n*b² and convert all base powers (4^x, 8^x, 9^x) to prime bases (2²x, 2³x, 3²x) in Line 1.
sub90 ESATARCH-M1-02: Surd Rationalisation, Difference-of-Squares & Laws of IndicesMathematics 1
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SUB-90 ZONE (<40S)
0.0s40s Sub-9090s ESAT Budget150s Classroom
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Mathematics 1•ARCH-M1-02•Standard 5-Option
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