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alexandr1967 [171]
3 years ago
8

Expanding Expressions: Expand the following expressions.

Mathematics
2 answers:
Kryger [21]3 years ago
8 0

Answer:

1) \:  \:  \:  \:  \: 5(r + 2) \\ \:  \:  \:  \:  \:  \:  \:  \:  5r + 10 \\  \\ 2) \:  \:  \:  \:  \: 6b(b - 2a) \\  \:  \:  \:  \:  \:  \:  {6b}^{2}  - 12ab \\  \\ 3) \:  \:  \:  \:  \: 8cd(c - 2 + 40) \\  \:  \:   {8c}^{2}d - 16cd + 320cd \\   {8c}^{2}d - 304cd

Fed [463]3 years ago
8 0

Answer:

Expand the following expressions.

1. 5 (r +2)

= (5×r) + (5×2)

= 5r + 10

2. 6b (b-2a)

= (6b×b) - (6b×2a)

= 6b²-12ba

3. 8cd (c-2 +40)

= (8cd×c) - (8cd×2) + (8cd×40)

= 8c²d - 16cd + 320cd

= 8c²+ 304cd

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