SURDS

Descripción

GCSE (NUMBER) MATHS Fichas sobre SURDS, creado por Elliot O'Leary el 08/06/2014.
Elliot O'Leary
Fichas por Elliot O'Leary, actualizado hace más de 1 año
Elliot O'Leary
Creado por Elliot O'Leary hace más de 10 años
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Resumen del Recurso

Pregunta Respuesta
What are surds? surds are numerical expressions that contain square roots
Rule for MULTIPLYING surds? √a x √b = √ab AND C√a x D√b = CD√ab
Rule for DIVIDING surds? √a ÷ √b = √a/b AND C√a ÷ D√b = C/D√a/b
SIMPLIFYING surds rules? √20 = √4x5 = 2√5 √20 + √45 = 2√5 + 3√5 = 5√5
Rationalise the denominator of 2/√5 Multiply the top and bottom by √5: 2 x √5/√5 x √5 = 2√5/5
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