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Addition and Subtraction of Algebraic Expressions

ii Add: t - 8...

Question

Question 2 (ii)

Add:

t - 8tz, 3tz - z, z - t

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Solution

t - 8tz, 3tz - z, z - t = t - 8tz + 3tz - z + z - t
= t - t - 8tz + 3tz - z + z
= (1-1)t + (-8+3)tz + (-1+1)z
= 0 - 5tz + 0 = -5tz

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