Question 1

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Marked out of 9.00

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begin mathsize 12px style begin bold style 9 end style to the power of begin bold style 2 end style end exponent bold space bold times bold space begin bold style 9 end style to the power of begin bold style negative 13 end style end exponent bold space bold equals end style begin mathsize 12px style bold a to the power of begin bold style negative 5 end style end exponent bold space bold times bold space bold a to the power of begin bold style negative 3 end style end exponent bold space bold equals end style a
begin mathsize 12px style begin bold style 3 end style to the power of begin bold style 9 end style end exponent bold space bold colon bold space begin bold style 3 end style to the power of begin bold style negative 14 end style end exponent bold space bold equals end style begin mathsize 12px style bold a to the power of begin bold style negative 11 end style end exponent bold space bold colon bold space bold a to the power of begin bold style negative 4 end style end exponent bold space bold equals end style a
begin mathsize 12px style open parentheses begin bold style 14 end style to the power of begin bold style negative 2 end style end exponent close parentheses bold space to the power of begin bold style negative 2 end style end exponent bold space bold equals end style
begin mathsize 12px style open parentheses bold a to the power of begin bold style 8 end style end exponent close parentheses bold space to the power of begin bold style negative 5 end style end exponent bold space bold equals end style a

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