Expand and simplify (6x - 2y)(3x - 7y)

Expand brackets: 18x^2 - 42xy - 6xy + 14y^2 Simplify: 18x^2 - 48xy + 14y^2

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Answered by Beth W. Maths tutor

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Rationalise the denominator of the following fraction: 1/(√2 + 1)


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