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Yakvenalex [24]
3 years ago
10

(x+2)^2+(x-3)^2-2x^2)

Mathematics
1 answer:
garri49 [273]3 years ago
4 0

Answer:

<u>13 - 2x </u>

Step-by-step explanation:

(x +2)² + (x - 3)² - 2x²

<em>Expand.</em>

(x + 2)(x + 2) + (x - 3)(x - 3) - 2x²

x² + 2x + 2x + 4 + x² - 3x - 3x + 9 - 2x²

<em>Bring all the like terms together then simply.</em>

x² + x² - 2x² + 2x + 2x - 3x - 3x + 4 + 9

2x² - 2x² + 4x - 6x + 13

= <u>13 - 2x</u> (or <u>-2x + 13</u> )

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Select all of the sets of measurements that can form a triangle.
bonufazy [111]

Answer:

35°, 15, 130°

70°, 70°, 70°

90°, 3 inches, 7 inches

Step-by-step explanation:

35°, 15, 130° = 185°  Could be an Obtuse triangle and a triangle = 180°

70°, 70°, 70° = Equalateral Triangle

90°, 3 inches, 7 inches = Right Triangle because it has one angle that measures 90°

Hopes this helps let me know if not correct

5 0
2 years ago
match the vocabulary word to its correct definition 1 additive identity 2 equation 3 multiplicative identity 4 open sentence 5 s
Semenov [28]

Answer:

See below.

Step-by-step explanation:

match the vocabulary word to its correct definition

1 additive identity

—the number 0 (for the numbers)

2 equation

—a mathematical sentence whose verb is ‘equal’ (=)

3 multiplicative identity

—the number 1 (for the real numbers

4 open sentence

—an equation that contains a variable or variables

5 symmetric property

—when the sides of an equation are interchanged, an equivalent equation is formed ; if a=b, then b=a

3 0
3 years ago
Hellohello, if you able to help me then please do. (:
mars1129 [50]

Answer:

exact form: 4/9

decimal form: 0.4 repeating

i hope this helps :)

7 0
3 years ago
Whats The CORRECT answer ?
KiRa [710]

Answer:

(B) 25%

Step-by-step explanation:

40 - 30 = 10

A $10 markdown rate was placed on the trousers.

10/40 = 1/4

That means a 1/4, or 0.25 (25%), markdown rate was placed on the trousers.

Hope it helps (●'◡'●)

6 0
3 years ago
Factor -8x3-2x2-12x-3by group
horrorfan [7]
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4 0
3 years ago
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