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Simplify (k^3)^2

The rule we use here is (a b ) c = a bc Therefore, (k 3 ) 2 = k 6
JB
Answered by James B. • Maths tutor
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Solve 3x² + 6x – 2 = 0. Give your solutions correct to 2 decimal places [calculator paper]

We have a quadratic equation since the highest power of x is 2. Therefore, we can use the quadratic formula, which we recall to be: x = [- b ± √(b² - 4ac) ] / 2a In accordance with the formula, we set a = 3,...
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Answered by Tutor90708 D. • Maths tutor
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Answered by Vicente O. • Physics tutor
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How do you calculate a^5 x a^16 / a^4?

When each term has the same base, add the indices that are multiplied. Then subtract the indices that are divided. a^5 x a^16 / a^ 4 = a^(5+16) / a^4 = a^ 21 / a^4 = a^(21-4) = a^17
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Answered by Elliot P. • Maths tutor
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What should I study (and how) to achieve a good grade in Chinese Mandarin GCSE?

FIrst of all, you need to enter the so-called 'Chinese mentality' when writing in Mandarin. In other words, you need to be aware of the main sentence structure (Subject , Verb, Object) and its variants. My l...
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Answered by Luca D. • Mandarin tutor
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