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21-08-2019
Mathematics

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What is the value of the expression below when c=5 and d=4

What is the value of the expression below when c5 and d4 class=

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21-08-2019

6c^2-5d+8

Use the substitution method

6(5)^2-5(4)+8

Do the first bracket first

6(5*5)-5(4)+8

6(25)-5(4)+8

150-5(4)+8

Multiply again

150-20+8

130+8

=138

Answer: (C) 138

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