Expand 5yx^2 (3x^3 - 5xy + wy^2)

To do this we must multiply each of the individual terms inside the brackets by the outside terms. Be cautious of the negative term and its corresponding sign. We will go over the method in the uploaded file.

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Answered by Ishaaq N. Maths tutor

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Make n the subject of the formula: m = 5n - 21


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