Simplify by combining like terms: $- 5 t^{2} - 3 t^{2}$

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Solution

Given
$- 5 t^{2} - 3 t^{2}$

$= t^{2} (- 5 - 3)$

$= t^{2} (- 8)$

$= - 8 t^{2}$

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Question 1 (i)

Simplify combining like terms:

21b - 32 + 7b - 20b

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