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3 years ago

Math simplify (7a+5b-2c) + (5a+7b) + (2a-7c) + (2a-5b+3c) algebra

Mathematics

1 answer:

Alekssandra [29.7K]3 years ago

6 0

Answer:

$-10a^2+25ab-15ac+12a+12b-2c$

Step-by-step explanation:

$(7a+5b-2c)+(5a+7b)+(2a-7c)+(2a-5b+3c)$

Distribute:

$=7a+5b-2c+5a+7b+(2a)(2a)+(2a)(-5)+(2a)(3c)+(-7a)(2a)+(-7a)(-5b)+(-7a)(3c)$

$=7a+5b-2c+5a+7b+4a^2-10ab+6ac-10a^2+35ab-21ac$

Combine all like terms:

$=(4a^2-14a^2)+(-10ab+35ab)+(6ac-21ac)+(7a+5a)+(5b+7b)+(-2c)$

$=-10a^2+25ab-15ac+12a+12b-2c$

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5. $40

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Step-by-step explanation:

<h3><u>Question 5</u></h3>

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Given:

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Create equivalent ratios with the given information and defined variable, and <u>solve for x</u>:

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