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Expand four multiplied by three plus nine 𝑥.
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In order to expand a single bracket, we need to multiply the number outside the bracket by both of the numbers inside the bracket.
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Four multiplied by three is equal to 12.
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Therefore, our first term will be 12.
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Four multiplied by nine 𝑥 is equal to 36𝑥.
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Therefore, our second term is 36𝑥.
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The expansion of four multiplied by three plus nine 𝑥 is 12 plus 36𝑥.