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Start by expanding the brackets: (Take special care to remember the minus sign when expanding the second bracket as this is a common mistake)= 62x + 63 - 3x - x(1/x)Simplify further:= 12...

By Pythagoras' Theorem, we know 5²+12² = c². So c² = 169, thus c = +13 as lengths are positive.

To solve the first inequality, you need to subtract 6 from both sides of the inequality, to obtain 4n≤12. This can then be cancelled down to n≤3 by dividing both sides by 4. To solve the second inequality...

To form the past tense in German, you need the conjugated auxiliary verb (haben or sein) and the past participle of the verb, which comes at the end of the sentence. For example, if you want to say "...

We know from our rule of indices that raising a power to a power can be simplified by multiplying so (5³)³ = 5⁹ we also know that when dividing indices we can use the subt...