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3 years ago

Need help multiplying

Mathematics

2 answers:

shusha [124]3 years ago

8 0

First simplify:
(r+5)(r+2). 3(r-10)
------------- × ------------
3 (r-10)(r+5)

Now you can take out the similar terms, like 3, and (r+5), and (r-10)

So the only thing left is:
(r+2). 1
------ ---
1. 1

So your answer is (r+2)/1 or just r+2 :)

Lina20 [59]3 years ago

6 0

The final answer would be:
r+2

Exact steps are shown in the attached picture.

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Hey there!

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Quadratic formula : ax² + bx + c = 0 where a ≠ 0

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If b² - 4ac > 0 , There are 2 real-number solutions

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▪️ (1)

$x_1 = \frac{ - b - \sqrt{ {b}^{2} - 4ac} }{2a} \\ \\ x_1 = \frac{ - 2 - \sqrt{36} }{2(1) } \\ \\ x_1 = \frac{ - 2 - 6}{2} \\ \\ x_1 = \frac{ - 8}{2} \\ \\ \blue{\boxed{\red{x_1 = -4}}}$

▪️ (2)

$x_2 = \frac{ - b + \sqrt{ {b}^{2} - 4ac } }{2a} \\ \\ x_2 = \frac{ - 2 + \sqrt{36} }{2(1)} \\ \\ x_2 = \frac{ - 2 + 6}{2} \\ \\ x_2 = \frac{4}{2} \\ \\ \red{\boxed{\blue{x_2 = 2}}}$

>> Therefore, your answers are x = -4 or x = 2.

Learn more about quadratic equations:

brainly.com/question/27638369

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