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Murrr4er [49]
3 years ago
13

Expand or simplify 3c(5+c) -2(3c-7)​

Mathematics
2 answers:
Luden [163]3 years ago
7 0
3c(5+c) -2(3c-7)
15c+3c^2-6c+14
9c+3c^2+14
ikadub [295]3 years ago
7 0

Answer:

<u>It</u><u> </u><u>is</u><u> </u><u>3</u><u>c</u><u>²</u><u> </u><u>+</u><u> </u><u>9</u><u>c</u><u> </u><u>+</u><u> </u><u>1</u><u>4</u>

Step-by-step explanation:

3c(5 + c) - 2(3c - 7)

open the brackets:

= (15c + 3 {c}^{2} ) - (6c - 14) \\  = (15c  +  {3c}^{2} ) - 6c + 14

express in quadratic equation:

3 {c}^{2}   + 9c  +  14

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